According to Pagesix.com, Life & Style magazine paid for Sunday night's bash at the Polaroid Beach House in Malibu. The event was catered by hip celebrity chef Kerry Simon, after Lohan visited his newly-opened restaurant Simon LA. The no-longer-teen actress took a turn in the DJ booth alongside Dustin Hoffman's son Jake, and later showed off her vocal skills by singing Madonna songs on a karaoke machine. Security shooed away several dozen paparazzi hiding under the house, on the beach or bobbing in boats in the ocean, in order to protect Life & Style's scoop.

Lohan recently tried to throw the press off the scent regarding the location of her party. She told Harper's Bazaar magazine: "I'm going to go away, out of the country and do something fun and different. They won't find me."

Lindsay Lohan spent much of her birthday in bathing suits.

The Just My Luck actress spent some time chilling on the sand with her pals.

But like any good Hollywood star, Lindsay didn’t stick to just one bikini all day reports The Sun UK.

To start with she slinked up in a leopard print two-piece.

As the sun beat down on the beach on the outskirts of LA, the birthday girl soon decided a change was in order and donned a skimpy sailor-style bikini.

Lindsay clearly likes to show off her assets.

Images JustJared.com