Lindsay Lohan and Sam Ronson: Cuddly at the Club

Just arrived in the nation's capital following her leggings launch in New York City, Lindsay Lohan was out supporting girlfriend Samantha Ronson at a gig in Washington DC on Thursday night (October 16).

Doing their best to stay incognito, the "Mean Girls" starlet and her DJ mate headed into Lotus Range, where Samantha was booked to spin at the club for a charity fundraiser for the Children's Miracle Network.

According to a source on-hand, "(Lindsay) initially appeared completely anti-social, asking for a screen to be put up so only a select few at Lotus could even see her. Instead of grooving to Samantha's tunes, she spent the first part of her girlfriend's set instead staring at a computer looking through MySpace."

The insider adds, "But then Samantha went up to Lindsay, shared a laugh and, according to witnesses, gave Lindsay a kiss that completely changed her mood."

"She suddenly got up and started wildly dancing," one club-goer said. "Everyone went wild, calling out her name, as she really got into dancing. It was so bizarre seeing her suddenly change like that."

The attendee later allegedly saw the duo kissing backstage, saying, "They looked like they were really into each other. They were not putting it on."

Gossip Girls

Enjoy the pictures of Lindsay Lohan and Sam Ronson out in DC last night (October 16).