I just realized that the actress that plays Serena is from
The Sisterhood of the Traveling Pants. So cheesy, but such a cute movie! And she's going to be in the 2nd one too!
And lo and behold, I knew the actor who played Dan was around the WB on two other shows, but looks like the girl who plays Blair is too. From
7th Heaven, to the short lived
Tarzan and even
Veronica Mars (even though that was UPN, but it still counts still it's all CW now).