'Twilight' Cast Pics From the Oprah Set!

This is a huge week for Twi-hards. A rundown — OK! is revealing exciting Twilight news tomorrow, the Twilight Special on The Oprah Winfrey Show airs Thursday, Robert Pattinson celebrates his 24th birthday and Thursday, May 13, Eclipse tickets go on sale!

Stills from the taping on the Twilight special have been released, and Rob, Kristen Stewart and Taylor Lautner could not look happier.

Judging by Oprah's grin, it looks like the group shared a lot of laughs on set. Will you be tuning in to watch the special?