Rihanna will turn 24 next Monday, Feb. 20, but the 'We Found Love' singer is starting the party early. Ain't nothing wrong with that, especially when you are young, rich, famous, beautiful, have racked up No. 1 singles with great frequency and are the most liked female on Facebook.

Fresh off her 2012 Grammy Awards performance, RiRi celebrated her big day with a Caribbean-themed bash at the Hearst Mansion in Beverly Hills on Monday (Feb. 13.)

PEOPLE reports that about 100 of RiRi's friends and family came out to celebrate with her, including A-listers like her bestie Katy Perry, her 'Princess of China' collaborator Chris Martin of Coldplay and Bruno Mars. We didn't hear rumblings of her reported on-again, off-again ex Chris Brown being in attendance. Maybe they had a secret rendezvous later, if they are indeed hooking up in private since every week a new story surfaces that the former couple can't stay away from one another.

Guests noshed on Caribbean food and cupcakes boasting Barbadian flags in honor of RiRi's home country. There was also a photo booth where people could wear costumes and snap shots to commemorate the occasion. Hey, Rihanna only turns 24 once. Why not make it the fete of all fetes?

A DJ was on tap to spin tunes and there was a brass drum player who tapped out Caribbean beats.

An attendee said the singer was making the most of the evening, "dancing all night and had an amazing time celebrating with her friends."

The custom cake was rolled out at 2AM. An image of RiRi laying on her belly and wearing a red bikini bottom. We bet the guests were jonesing for a taste…of the cake!

More than 20 bottles of Armand de Brignac Brut Gold Champagne was also served, and Luxe cigars by Camacho were handed out as party favors.

Happy birthday, RiRi. Maybe your 24th year be filled with happiness.