1/5 Prince Albert wished the actor a happy birthday. Photo: Instagram/@officialslystallone 2/5 The Rocky star celebrated his 70th birthday with his wife Jennifer and daughters in Monaco. Photo: Jason Merritt/Getty Images 3/5 Singer Ricky Martin was also in attendance for the festivities. Photo: C Flanigan/FilmMagic 4/5 Guests were gifted with boxing glove bracelets. Photo: Instagram/@Anne_Lara_Paris 5/5 The birthday boy was treated to a massive cake featuring sparkler candles. Photo: Instagram/@Anne_Lara_Paris © ¡HOLA! Prohibida la reproducción total o parcial de este reportaje y sus fotografías, aun citando su procedencia. Más sobre: Monaco royals Sylvester Stallone Prince Albert Más noticias sobre Monaco royals Tatiana and Andrea Casiraghi's kids wear exclusive Crown Princess Marie-Chantal designs for Hanover royal... Princess Grace Kelly's granddaughter Pauline Ducruet heads to the White House: 'My Palace is Bigger' Monaco's royal family attends Prince Ernst-August's wedding to fashion designer Princess Caroline’s estranged husband Prince Ernst August opposes son’s wedding