Lindsay Lohan celebrated her 22nd birthday with 100 of her closest friends on Wednesday night at Hollywood hotspot Teddy’s.

Lohan was joined by mother Dina and inseparable gal-pal Samantha Ronson, among others, at the club inside the Roosevelt Hotel.

The party went retro with an ’80s prom theme that found Lohan wearing a ruffled black-and-white dress and the room decorated with red, silver, baby blue and light pink balloons, palm tree banners and happy birthday bar napkins, the source reported.