It's been confirmed that some of the heaviest Twilight Saga hitters are, in fact, NOT tweeting. Robert Pattinson, Kristen Stewart and Taylor Lautner are among the non-Tweeters, as are Kellan Lutz and Ashley Greene.

That said, however, Kellan Lutz did ring the bells of many a female Twilight fan when he tweeted from Peter Facinelli's account the other night at dinner:

Hey it's Kellan.Sitting here at dinner with Fach. Thanks for making me a trending topic. Don't know what that is but it sounds cool.luv ya

Edi Gathegi (Laurent) and Christian Serratos (Angela) often banter on their Twitter accounts; in fact, Christian recently twittered about fan favorite, Kellan Lutz:

Poker with Kellan...He called for cards and got them...even with magic powers he lost. ;)

Though I'm not one to become terribly enamored with the celebrity aspect of the filming process, it is a treat to find a celeb randomly tweeting on my account. Here's a comprehensive list of all the Twilight Saga celebs who grace the Twitter scene now and again:

• Peter Facinelli
• Jackson Rathbone (100 Monkeys)
• Jamie Campbell Bower
• Michael Sheen
• Gil Birmingham
• Justin Chon
• Billy Burke
• Christian Serratos
• Anna Kendrick
• Jodelle Federland
• Charlie Bewley
• Edi Gathegi
• David Slade
• Boo Boo Stewart (his mom)
• Rachelle LeFevre
• Kiowa Gordon

Want to follow other celebs? Check out Hello! Magazine's list of celebrity Tweets!