Paris Hilton Turns The Heat Up In Malibu

Paris Hilton was treating someone to cupcakes on the beach in Malibu Saturday. But the looks of her bangin' bod, it wasn't for her!

So we're guessing her boyfriend River was maxin' and relaxin' on the sand, waiting for his lovely lady to bring him a treat. And boy, did he get a treat ...

Meanwhile, as Paris shopped with River later in the day at the Malibu Country Mart, we asked her about her upcoming album with Cash Money Records ...