Now that the show is over it looks like former "Gossip Girl" stars are dishing out secrets about on-set behavior and the first star to get bashed was Blake Lively. Ryan Reynolds' wife was called out for playing the dive card on set and ruining the birthday of Aaron Tveit.

For those of you who do not know the name of the actor you will remember his face as Tveit played Nate Archibald's cousin Trip Vanderbilt on the series, who had an affair with Serena van der Woodsen, played by Lively.

According to Yahoo! TV Tveit stopped by the Bravo show "Watch What Happens Live" to talk to Andy Cohen about his upcoming USA Show "Graceland."

Everything was going fine until they began to take calls from fans who wanted to speak to the stars what were guest on the Bravo show. One caller phoned in and asked Tveit who was the biggest diva on set.

The actor started out by saying that everyone on the set was cool however one day, when it was his birthday his blonde bombshell co-star took three hours to come out of her trailer and pretty much ruined the "Graceland" star's special day.

Tveit has a message for Lively, he said, "So, if Blake's watching, I want you to think that I remember that, and you were cool, but that wasn't very nice."

Now this is not the first time that the "Gossip Girl" show has received negative words towards on set behavior.

There have been constant rumors about the stars being brats on set, complaining about scripts, wardrobe, and some stars (Taylor Momsen) constantly arrived late to set.

However, Lively among with some of her other co-stars are doing everything they can to make sure a "Gossip Girl" movie does not see the light of day.

We never pegged Lively as a diva but Aaron Tveit sure proved us wrong.

What do you think of her on set behavior? Leave us a comment below.

For more Blake Lively news click HERE.

Watch Aaron Tveit bash Blake Lively at the 13:30 mark.