Russell Brand Kisses Blond Mystery Woman After Stand-Up Show at London Club—See the Pic

This flaxen-haired lass isn't to be confused with Brand's actress pal Sheridan Smith, who was also there to see his show at the Soho Theatre

So many blonds, so little time.

Though British actress Sheridan Smith prominently showed up to watch pal Russell Brand's A Night of Spontaneous Comedy show at London's Soho Theatre on Tuesday, she wasn't the platinum-haired lass who was later spotted getting a smooch on the cheek from the cheeky comedian.

Brand shared the kiss in the club's downstairs bar area, where a crowd congregated after his stand-up gig. 

Sheridan has denied being more than friends with Brand, tweeting Tuesday: "Just had dinner with lovely friends. And yes they're wrong yet again. He's one of my best mates Xx"

Meanwhile, Brand has been rallying his troops on Twitter to sign an online petition encouraging Parliament to implement drug-law reform. Hoping to reach as many rabid fans as possible, he tweeted earlier today: 

"My adored womanising apprentice @Harry_Styles please encourage your followers to sign this http://bit.ly/193mXXE one day you might need it!"