Scarlett Johansson and Jared Leto have reportedly been spotted canoodling again at an exclusive London nightclub. The 'Lost In Translation' beauty invited the heartthrob actor to her lavish "un-birthday party" at the trendy Kingly Club on Thursday night (12.08.04) and onlookers claim they looked close. One revealed : "He was stroking her leg and then Scarlett sat on his lap." Scarlett - currently in London to film Woody Allen's latest movie - splashed out a staggering 25,000GBP on the bash, which featured a "stripes only" dress code and 'Gone With The Wind'-themed cocktails. A source revealed : "Scarlett was looking for a reason to throw a party - but she doesn't turn 20 until November. So she and her friend Gillian thought it would be funny to have an 'un-birthday bonanza'." Scarlett first sparked rumours of romance with Jared in June when they were spotted enjoying drinks at the swanky Chateau Marmont hotel in Los Angeles before driving off together in Jared's car. An onlooker revealed at the time: "They arrived in Jared's Porsche and were laughing and giggling. They seemed very close and couldn't take their eyes off each other. The pair had a quick drink before getting back in his car and speeding off, they drove straight down Sunset Boulevard in full view of everyone."

The 'Fight Club' actor has been linked to several famous beauties since splitting from long-term girlfriend Cameron Diaz, who is now romancing Justin Timberlake.

He was seen out on several dates with Britney Spears and most recently dated his beautiful 'Alexander' co-star Angelina Jolie.