People.com Celebrity Steven Tyler & Vince Vaughn's Near-Miss Hangout in West Hollywood Plus, more star sightings! By People Staff Published on January 30, 2013 05:00 PM Share Tweet Pin Email Photo: Jeff Kravitz/FilmMagic; Lucas Jackson/Reuters/Landov The more, the merrier! Steven Tyler and Vince Vaughn stepped out separately at Sunset Marquis’s Bar 1200 in West Hollywood on Monday night. Both stars arrived around 10 p.m. – and didn’t seem to see each another, an onlooker tells PEOPLE. “Steven was there with a group of guys and girls,” the source adds. “There was a birthday going on. He was posing with his friends for photos. They were laughing and having a great time.” Meanwhile, Vaughn kept a low profile with a few male friends. “They seemed like just ordinary guys going out to catch up together and share a few laughs,” the source says. Wearing baggy jeans and running shoes, Vaughn was “super chatty and polite” to whomever walked by.– Dahvi Shira