Olivia Wilde and “SNL” star Jason Sudeikis kept a respectable distance at the Boom Boom Room on Thursday night as they rocked out to a performance by the Kills. The duo, who have been reluctant to go public with their romance, weren’t overly affectionate and seemed to keep each other at arm’s length at the DeLeon Tequila-sponsored bash.

PHOTOS: OLIVIA WILDE

Alexandra Richards partied nearby with friends, dancing in the lounge area. Meanwhile, Lindsay Lohan slid in incognito in a black, wide-brimmed hat but managed to find a table in full view of guests. We spotted Lindsay snapping photos of her friends but otherwise remaining low key. We hear she’s been working hard to avoid trouble during Fashion Week because she’s serious about landing the role of Elizabeth Taylor in a Lifetime flick. Alexander Skarsgard was friendly at the party, lending his chewed gum to a female admirer. The oral hygiene-challenged young lady later confessed to us that she chewed the gum for the next six hours.