After a week of sweating it out, your beloved 'this just in' is back, doing what we do best.

Spotted:

Miss B. Lively trades dress for shirt as she arrives/departs from her appearance on 'The Late Show With David Letterman' in New York City, Thursday afternoon at the Ed Sullivan Theater.

Our B sure knows how to dress to impress. Tip top from head to toe - on both accounts.

Gossip Girl's IT girl (who recently turned 21 this past Monday) dropped by the late show to promote the brand new second season of her hit CW show, which kicks off it's second run September 1st @8pm on the CW Network.

Can't wait until then? Watch the first 4 minutes of the steamy second season premiere here!!

You can catch Blake's Letterman drop by below:

More snaps of B. Lively's visit:

Need more GG? Below, check out an exclusive behind the scenes look at the new season: