Looks like Dan Humphrey may have some serious competition. Just read these news at E! Online about some new characters that might be coming to the show.

Inside sources reveal exclusively that the casting deals for two new Gossip Girl characters just closed tonight, including a love interest for one Miss Serena Van der Woodsen (Blake Lively), and an OC star who’s coming to the Upper East Side to stir up trouble.

Want to know who’s playing what? Click in!

According to insiders, John Patrick Amedori has been cast as Aaron Rose, who was a major character in the Gossip Girl book series. He’s an artist who will serve as a new love interest for Serena in the current second season, and he has a philanthropic side which gets “S” all aflutter.

Meanwhile, Rufus better put a cute little designer shock collar on that unpredictable Jenny Humphrey, ’cause it looks like she’s dabbling even deeper into the dark side this season. According to inside sources, the deal just closed a few hours ago for Willa Holland, best known as Kaitlin Cooper on The OC, to come on the series for three episodes. She’ll play Agnes, a 16-year-old model who meets Jenny while working for Blair’s badass fashion designer mother, Eleanor Waldorf, and is anything but a good influence. (Maybe she’s related to Georgina?)

Meanwhile, I’m dying to know what you all thought of last night’s Gossip Girl premiere (amazing, no?) and tonight’s 90210 (I’m still watching). And of course this casting news, too.