Jason Biggs has sparked a Twitter.com feud with his American Pie co-star Tara Reid after referring to her as a "hot mess" on a Tv chat show.

The actor was promoting his new Netflix Tv hit Orange is the New Black on a recent episode of Watch What Happens Live in America, when he was asked for a suggested prison nickname for Reid, as part of a game devised by host Andy Cohen.

Biggs offered up "Shark Killer" and "Hot Mess", much to the delight of the host and his audience - but the actress wasn't laughing and she has since taken aim at the actor via Twitter.

Taking to her blog on Sunday (20Oct13), she wrote, "@JasonBiggs it's really sad I just landed in La and the first thing I read about you (is) that you are calling me a hot mess. I've supported u (sic)!"

Feeling awful, Biggs responded hours later, tweeting, "@TaraReid I love u Tara, it was a joke! Didnt (sic) mean to offend, Totally kidding around! it was a game!"