Inside Lindsay Lohan’s 22nd birthday bash

Lindsay Lohan celebrated her 22^nd birthday with 100 of her closest friends on Wednesday night at Hollywood hotspot Teddy’s, a source at the party revealed to “Access Hollywood.”

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.

Lohan’s table was filled with cupcakes, including one large cupcake with a tiara. She sipped on Redbull all night while guests enjoyed Belvedere cocktails.

Nicole Richie’s ex, DJ AM, performed until just before midnight, when partygoers sang “Happy Birthday” to Lohan, who was presented with a large cake imprinted with the image of a billowing-skirt Marilyn Monroe from “The Seven Year Itch.”

Lindsay recently posted for a nude New York Magazine photo shoot paying tribute to Monroe’s “The Last Sitting.”

After blowing out the candles, she thanked guests for coming before joining Ronson behind the DJ booth, where Ronson handled the turntables for the last hour of the party.

Lohan reportedly spent the night working the room, chatting with guests and hanging out with Ronson during her DJ set until the birthday fete concluded at 1 a.m.

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