Princess Charlene of Monaco comforts her daughter Princess Gabriella during the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Princess Charlene of Monaco comforts her daughter Princess Gabriella during the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Princess Charlene of Monaco comforts her daughter Princess Gabriella during the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Prince Albert II of Monaco, his wife Princess Charlene and their son Prince Jacques attend the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Princess Charlene of Monaco hugs children as she attends the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Prince Albert II of Monaco, his wife Princess Charlene and their son Prince Jacques attend the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Princess Charlene of Monaco holds her son Prince Jacques during the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Prince Albert II of Monaco, his wife Princess Charlene and their son Prince Jacques attend the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Prince Albert II of Monaco (C), Princess Charlene (L), their son Prince Jacques (2ndL), Camille Gottlied (2dnR) and Louis Ducruet (R) attend the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Prince Albert II of Monaco, his wife Princess Charlene and their son Prince Jacques attend the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Prince Albert II of Monaco, his wife Princess Charlene and their son Prince Jacques attend the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Prince Albert II of Monaco (C), Princess Charlene (L), their son Prince Jacques (2ndL), Camille Gottlied (2dnR) and Louis Ducruet (R) attend the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Princess Charlene of Monaco holds her son Prince Jacques during the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Prince Albert II of Monaco (C), Princess Charlene (L), their son Prince Jacques (2ndL), Camille Gottlied (2dnR) and Louis Ducruet (R) attend the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Prince Albert II of Monaco (R), his wife Princess Charlene (L) and their twins Prince Jacques (2ndL) and Princess Gabriella (2ndR) arrive to attend the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Prince Albert II of Monaco (R), his wife Princess Charlene and their son Prince Jacques attend the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Prince Albert II of Monaco (R), his wife Princess Charlene and their son Prince Jacques attend the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Prince Albert II of Monaco (L), his wife Princess Charlene (R) and their son Prince Jacques attend the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Princess Charlene of Monaco waves as she holds her son Prince Jacques during the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Football Soccer - Monaco v Bastia - French Ligue 1 - Louis II stadium, 3/12/16. Monaco's Guido Carrillo challenges Bastia's (L-R) Alexander Djiku, Gilles Cioni and Lassana Coulibaly. REUTERS/Eric Gaillard 

Football Soccer - Monaco v Bastia - French Ligue 1 - Louis II stadium, 3/12/16. Monaco's Radamel Falcao in action . REUTERS/Eric Gaillard 

Football Soccer - Monaco v Bastia - French Ligue 1 - Louis II stadium, 3/12/16. Monaco's Radamel Falcao reacts after scoring . REUTERS/Eric Gaillard 

Football Soccer - Monaco v Bastia - French Ligue 1 - Louis II stadium, 3/12/16. Monaco's Guido Carrillo (R) reacts after scoring the fifth goal for his team. REUTERS/Eric Gaillard 

Football Soccer - Monaco v Bastia - French Ligue 1 - Louis II stadium, 3/12/16. Monaco's Guido Carrillo reacts after scoring the fifth goal for his team. REUTERS/Eric Gaillard 

Football Soccer - Monaco v Bastia - French Ligue 1 - Louis II stadium, 3/12/16. Monaco's Radamel Falcao (C) reacts after scoring against Bastia's goalkeeper Jean-Louis Leca. REUTERS/Eric Gaillard 

Football Soccer - Monaco v Bastia - French Ligue 1 - Louis II stadium, 3/12/16. Monaco's Radamel Falcao reacts after scoring. REUTERS/Eric Gaillard 

Football Soccer - Monaco v Bastia - French Ligue 1 - Louis II stadium, 3/12/16. Monaco's Radamel Falcao reacts after scoring . REUTERS/Eric Gaillard 

Football Soccer - Monaco v Bastia - French Ligue 1 - Louis II stadium, 3/12/16. Monaco's Radamel Falcao challenges Bastia's goalkeeper Jean-Louis Leca. REUTERS/Eric Gaillard 

Football Soccer - Monaco v Bastia - French Ligue 1 - Louis II stadium, 3/12/16. Monaco's Kylian Mbappe challenges Bastia's goalkeeper Jean-Louis Leca. REUTERS/Eric Gaillard 

Football Soccer - Monaco v Bastia - French Ligue 1 - Louis II stadium, 3/12/16. Monaco's Radamel Falcao (R) challenges Bastia's Alexander Djiku. REUTERS/Eric Gaillard 

Football Soccer - Monaco v Bastia - French Ligue 1 - Louis II stadium, 3/12/16. Monaco's Radamel Falcao (R) challenges Bastia's Mathieu Peybernes. REUTERS/Eric Gaillard 

Football Soccer - Monaco v Bastia - French Ligue 1 - Louis II stadium, 3/12/16. Monaco's Radamel Falcao (C) challenges Bastia's Alexander Djiku and Yannick Cahuzac (R). REUTERS/Eric Gaillard 

Football Soccer - Monaco v Bastia - French Ligue 1 - Louis II stadium, 3/12/16. Monaco's Kylian Mbappe challenges Bastia's Alexander Djiku. REUTERS/Eric Gaillard 

Football Soccer - Monaco v Bastia - French Ligue 1 - Louis II stadium, 3/12/16. Monaco's Kylian Mbappe challenges Bastia's Alexander Djiku. REUTERS/Eric Gaillard 

Football Soccer - Monaco v Bastia - French Ligue 1 - Louis II stadium, 3/12/16. Monaco's Bernardo Silva (C) challenges Bastia's Yannick Cahuzac (L) and Gilles Cioni. REUTERS/Eric Gaillard 

Football Soccer - Monaco v Bastia - French Ligue 1 - Louis II stadium, 3/12/16. Monaco's Bernardo Silva challenges Bastia's goalkeeper Jean-Louis Leca. REUTERS/Eric Gaillard 

Football Soccer - Monaco v Bastia - French Ligue 1 - Louis II stadium, 3/12/16. Monaco's Bernardo Silva challenges Bastia's Mathieu Peybernes. REUTERS/Eric Gaillard 

Football Soccer - Monaco v Bastia - French Ligue 1 - Louis II stadium, 3/12/16. Monaco's Radamel Falcao challenges Bastia's goalkeeper Jean-Louis Leca . REUTERS/Eric Gaillard 

Football Soccer - Monaco v Bastia - French Ligue 1 - Louis II stadium, 3/12/16. Monaco's Radamel Falcao challenges Bastia's goalkeeper Jean-Louis Leca . REUTERS/Eric Gaillard 

Usain Bolt of Jamaica (R) and Almaz Ayana of Ethiopia pose with their awards after being elected male and female World Athlete of the Year 2016 in Monaco, December 2, 2016. REUTERS/Eric Gaillard TPX IMAGES OF THE DAY 

Usain Bolt of Jamaica (L) receives the Male World Athlete of the Year Award 2016 from IAAF's President Sebastian Coe in Monaco December 2, 2016. REUTERS/Eric Gaillard TPX IMAGES OF THE DAY 

U.S. coach Arri Marra poses with his Best Coaching Achievement Award in Monaco December 2, 2016. REUTERS/Eric Gaillard 

Prince Albert II of Monaco attends the IAAF Athletics Awards ceremony in Monaco, December 2, 2016. REUTERS/Eric Gaillard 

Prince Albert II of Monaco attends the IAAF Athletics Awards ceremony in Monaco, December 2, 2016. REUTERS/Eric Gaillard 

Usain Bolt of Jamaica (R) and Almaz Ayana of Ethiopia with their awards after being elected male and female IAAF World Athlete of the Year 2016 in Monaco, December 2, 2016. REUTERS/Eric Gaillard 

Nafissatou Thiam of Belgium poses with her IAAF Female Rising Star Award 2016 in Monaco December 2, 2016. REUTERS/Eric Gaillard 

Tegla Loroupe of Kenya poses with her Presidents Award in Monaco, December 2, 2016. REUTERS/Eric Gaillard 

Tegla Loroupe of Kenya receives the IAAF President's Award from Prince Albert II of Monaco in Monaco, December 2, 2016. REUTERS/Eric Gaillard 

Tegla Loroupe of Kenya receives the Presidents Award from Prince Albert II of Monaco as IAAF's President Sebastian Coe looks on, in Monaco, December 2, 2016. REUTERS/Eric Gaillard 

Almaz Ayana of Ethiopia poses with her female World Athlete of the Year Award 2016 in Monaco December 2, 2016. REUTERS/Eric Gaillard 

Almaz Ayana of Ethiopia poses with her female World Athlete of the Year Award 2016 in Monaco December 2, 2016. REUTERS/Eric Gaillard 

Almaz Ayana (L) of Ethiopia is congratulated by Prince Albert II of Monaco after receiving the female World Athlete of the Year Award 2016 in Monaco December 2, 2016. REUTERS/Eric Gaillard 

Almaz Ayana (L) of Ethiopia is congratulated by Prince Albert II of Monaco after receiving the female World Athlete of the Year Award 2016 in Monaco December 2, 2016. REUTERS/Eric Gaillard 

Usain Bolt of Jamaica (C) and Almaz Ayana of Ethiopia (2nd L) with their awards after being elected male and female World Athlete of the Year 2016 in Monaco, December 2, 2016. REUTERS/Eric Gaillard 

Usain Bolt of Jamaica (R) and Almaz Ayana of Ethiopia with their awards after being elected male and female World Athlete of the Year 2016 in Monaco, December 2, 2016. REUTERS/Eric Gaillard 

Usain Bolt of Jamaica poses with his Male World Athlete of the Year Award 2016 in Monaco December 2, 2016. REUTERS/Eric Gaillard 

Usain Bolt of Jamaica poses with his Male World Athlete of the Year Award 2016 in Monaco December 2, 2016. REUTERS/Eric Gaillard 

Usain Bolt of Jamaica (R) is congratulated by Prince Albert II of Monaco after receiving the Male World Athlete of the Year Award 2016 in Monaco December 2, 2016. REUTERS/Eric Gaillard 

Usain Bolt of Jamaica (L) receives the Male World Athlete of the Year Award 2016 from IAAF's President Sebastian Coe in Monaco December 2, 2016. REUTERS/Eric Gaillard 

Usain Bolt of Jamaica (2nd R) and lmaz Ayana of Ethiopia (2nd L) pose with their awards and Prince Albert II of Monaco (L) and IAAF's President Sebastian Coe, after being elected male and female World Athlete of the Year 2016 in Monaco, December 2, 2016. REUTERS/Eric Gaillard