File photo dated June 18, 2019 of Prince Albert II and Princess Charlene of Monaco arrive to the award ceremony of 59th Festival of Television of Monte Carlo, held at Grimaldi Forum in Monaco. Charlene of Monaco, who turns 44 this Tuesday, January 25, 2022, has been invisible for over 2 months. Photo by Marco Piovanotto/ABACAPRESS.COM

File photo dated August 5, 2011 of SAS Prince Albert II of Monaco, his wife SAS Princess Charlene during the 63rd Red Cross ball held at the Sporting in Monte-Carlo, Monaco. Charlene of Monaco, who turns 44 this Tuesday, January 25, 2022, has been invisible for over 2 months. Photo by Marco Piovanotto/ABACAPRESS.COM

File photo dated June 23, 2020 of Prince Albert II of Monaco, Crown Prince Jacques of Monaco, Princess Gabriella of Monaco and Princess Charlene of Monaco attend the Fete de la St Jean procession in Monaco. Charlene of Monaco, who turns 44 this Tuesday, January 25, 2022, has been invisible for over 2 months. Photo by David Niviere ABACAPRESS.COM

File photo dated July 26, 2019 of Princess Charlene of Monaco attends the 71th Monaco Red Cross Ball Gala in Monte-Carlo, Monaco. Charlene of Monaco, who turns 44 this Tuesday, January 25, 2022, has been invisible for over 2 months. Photo by David Niviere/ABACAPRESS.COM

File photo dated October 30, 201 of HSH Princess Charlene of Monaco attends the 2013 Princess Grace Awards Gala at Cipriani 42nd Street in New York City, NY, USA. Charlene of Monaco, who turns 44 this Tuesday, January 25, 2022, has been invisible for over 2 months. Photo by Charles Guerin/ABACAPRESS.COM

File photo dated May 24, 2015 of Princess Charlene of Monaco attends the 2015 Formula One Grand Prix of Monaco at the Monte Carlo circuit in Monaco. Charlene of Monaco, who turns 44 this Tuesday, January 25, 2022, has been invisible for over 2 months. Photo by Nicolas Gouhier/ABACAPRESS.COM

File photo dated May 25, 2014 of Princess Charlene of Monaco attending the 2014 Formula One Grand Prix of Monaco at the Monte Carlo circuit in Monaco. Charlene of Monaco, who turns 44 this Tuesday, January 25, 2022, has been invisible for over 2 months. Photo by Nicolas Gouhier/ABACAPRESS.COM

Prince Albert II of Monaco, Princess Charlene of Monaco with their twin children Prince Jacques and Princess Gabriella, Kaia Rose Wittstock, Tatiana Santo Domingo, Princess Caroline of Hanover, Princess Alexandra of Hanover, Pierre Casiraghi with children India Casiraghi, Alexander Casiraghi and Francesco Casiraghi, Princess Charlene's brothers Gareth Wittstock and Sean-Michael Wittstock during the Army Parade, as part of the official celebrations marking the principality's National Day 2019 at the Monaco Palace, in Monaco. 19 Nov 2019 Pictured: Prince Albert II of Monaco, Princess Charlene of Monaco with their twin children Prince Jacques and Princess Gabriella Tatiana Santo Domingo, Princess Caroline of Hanover, Princess Alexandra of Hanover, Pierre Casiraghi with children India Casiraghi, Alexander Casiraghi and Francesco Casiraghi, Princess Charlene's brothers Gareth Wittstock and Sean-Michael Wittstock. Photo credit: MEGA TheMegaAgency.com +1 888 505 6342

Celebrities attends MOTORSPORT : FIA WEC - ROUND 8 - 24 HOURS OF LE MANS (FRA) 06/09-16/2019. 15 Jun 2019 Pictured: Princess Charlene of Monaco. Photo credit: KCS Presse / MEGA TheMegaAgency.com +1 888 505 6342

Celebrities attends MOTORSPORT : FIA WEC - ROUND 8 - 24 HOURS OF LE MANS (FRA) 06/09-16/2019. 15 Jun 2019 Pictured: Princess Charlene of Monaco. Photo credit: KCS Presse / MEGA TheMegaAgency.com +1 888 505 6342

Prince Albert II of Monaco, Princess Charlene of Monaco with their twin children Prince Jacques and Princess Gabriella and Princess Alexandra of Hanover, Caroline, Princess of Hanover, Pierre Casiraghi, Andrea Casiraghi, Pauline Ducruet, Louis Ducruet and Princess St??phanie of Monaco during the Army Parade, as part of the official celebrations marking the principality's National Day at the Monaco Palace, in Monaco. 19 Nov 2018 Pictured: Prince Albert II of Monaco, Princess Charlene of Monaco with their twin children Prince Jacques and Princess Gabriella and Princess Alexandra of Hanover, Caroline, Princess of Hanover, Pierre Casiraghi, Andrea Casiraghi, Pauline Ducruet, Louis Ducruet and Princess St??phanie of Monaco. Photo credit: MEGA TheMegaAgency.com +1 888 505 6342

Monaco's National Day - 19 Nov 2018 Prince Albert II of Monaco and his wife Princess Charlene with their twin children Prince Jacques and Princess Gabriella attend the Army Parade, as part of the official celebrations marking the principality's National Day at the Monaco Palace, in Monaco, 19. 19 Nov 2018 Pictured: Prince Albert II of Monaco and his wife Princess Charlene. Photo credit: Newspictures/ MEGA TheMegaAgency.com +1 888 505 6342

Prince Albert of Monaco and Princess Charlene arrive on the red carpet for the 84th Annual Academy Awards on February 26, 2012 in Hollywood, California. AFP PHOTO Joe KLAMAR

Princess Charlene of Monaco at Akris Fashion show, held at Le Palais de Chaillot as part of Paris Fashion show, on October 2, 2011, Paris, France. Photo by Giancarlo Gorassini/ABACAPRESS.COM # 292036_003

EXCLUSIVE - Princess Charlene of Monaco arriving at Akris Fashion show, held at Le Palais de Chaillot as part of Paris Fashion week, on October 2nd, 2011, Paris, France. Photo by ABACAPRESS.COM # 292119_009

Prince Albert ll and Princess Charlene of Monaco attend the Yorkshire Variety Club Golden Jubilee Charity Ball at Harewood House near Leeds on September 4, 2011

Princess Charlene of Monaco takes part to the "Red Cross Gala", Friday, Aug. 5, 2011, in Monaco. (AP Photo/Lionel Cironneau)

Princess Charlene of Monaco takes part to the "Red Cross Gala", Friday, Aug. 5, 2011, in Monaco where she was accompanied by her husband Prince Albert II of Monaco, unseen. (AP Photo/Lionel Cironneau)

Princess Charlene of Monaco arrives to attend the "Red Cross Gala", Friday, Aug. 5, 2011, in Monaco, she was accompanied by her husband Prince Albert II. (AP Photo/Lionel Cironneau)

Princess Charlene of Monaco poses at the 63rd annual Red Cross Gala, on August 5, 2011, in Monaco. The Monte-Carlo Red Cross Gala Ball is a celebrity studded event which helps to raise funds for various social causes. AFP PHOTO / SEBASTIEN NOGIER

SAS Princess Charlene of Monaco arriving at the 63rd Red Cross ball held at the Sporting in Monte-Carlo, Monaco on August 5, 2011. Photo by Frederic Nebinger/ABACAPRESS.COM

SAS Prince Albert II of Monaco, his wife SAS Princess Charlene during the 63rd Red Cross ball held at the Sporting in Monte-Carlo, Monaco on August 5, 2011. Photo by Marco Piovanotto/ABACAPRESS.COM

Princess Charlene of Monaco visits the exhibition 'The Magnificence and Grandeur of Royal Houses in Europe' held at the Grimaldi Forum in Monaco on August 3, 2011. Photo by Marco Piovanotto/ABACAPRESS.COM

Princess Charlene of Monaco visits the exhibition 'The Magnificence and Grandeur of Royal Houses in Europe' held at the Grimaldi Forum in Monaco on August 3, 2011. Photo by Marco Piovanotto/ABACAPRESS.COM

Princess Charlene of Monaco smiles as she attends the IAAF Super Grand Prix Herculis Meeting at the Stade Louis II on July 22, 2011 in Monte Carlo, Monaco. The event will take place one month ahead World Athletics Championships in Daegu (South Korea) and belongs to the Samsung Diamond League, elite circuit of athletics meets. AFP PHOTO / VALERY HACHE

Charlene Wittstock, Princess Caroline of Hanover and Alexandra of Hanover attending, from the Palace's balcony, the standard release ceremony and military parade on palace square in Monaco as part of National's day ceremonies in Monaco on November 19, 2010. Photo by Frederic Nebinger/ABACAPRESS.COM

Charlene Wittstock arriving to the Storkyrkan cathedral for the wedding of Crown Princess Victoria of Sweden and Daniel Westling in Stockholm, Sweden on June 19, 2010. Photo by Mousse-Nebinger-Orban/ABACAPRESS.COM

PHOTO: EAST NEWS/AFP South African swimmer, Charlene Wittstock, Prince Albert II of Monaco's girlfriend, arrives for the annual Rose Ball "Movida" at the Monte-Carlo Sporting Club in Monaco, on March 29, 2008. The Rose Ball is one of the major charity events in Monaco. Created in 1954, it benefits the Princess Grace Foundation.