Benedict Cumberbatch was spotted with two different women in a week, a mystery redhead and a Russia model. So which one is Benedict's girlfriend?

Russian model Katia Elizarova, 24, and the "Star Trek" star, 37, were photographed sharing a kiss at a friend's wedding last month, Fashion & Style reports. Katia also revealed that Benedict, who she refers to endearingly as "Ben," has been giving her acting advice ahead of her theatrical debut in "Sunstroke," adapted from Anton Chekhov's "The Lady With The Dog," according to The Daily Telegraph.

However, The Daily Mail reports that Katia actually lives with her businessman boyfriend of four years in London. 

"I know the pictures look intimate but it's all innocent," Katia said, The Daily Mail reports.

"It looks like we are having a sexy chat, but we were actually discussing what we were going to have off the restaurant menu."

The pair was first linked together last year, when Benedict opened up to clear the air, telling the Daily Telegraph that the two are "just old friends."

Days before the wedding, Cumberbatch was spotted with someone else while leaving a London nightclub: he was holding hands with a mystery redhead woman. He was reportedly enjoying a belated 37th birthday celebration at the club, along with friends including Stephen Fry, which features topless burlesque dancers, Fashion & Style reports.

The mystery redhead was wearing a little black dress, gold earrings, and stilettos. Cumberbatch was dressed more casually, in jeans, a white T-shirt, gray button-up, black cap, and matching sneakers.

Cumberbatch and the woman walked hand-in-hand after leaving Cirque Le Soir before getting into a taxi together, according to Fashion & Style.

The Huffington Post UK reports that Cumberbatch split from his girlfriend of 12-years, Olivia Poulet, in 2011. Since then, he has been linked to several women, but has never officially dated anyone seriously.