Partnering with Project Runway season 4 winner Christian Siriano, Gaia Online has announced that it will be hosting a four-day virtual prom event, titled Prom Crashers. Siriano has designed an exclusive line of fierce avatar prom garb for the event and will reward one attendee with a real-world, custom-designed garment.

Gaia Online users aged 13 and older can register for the free virtual prom at the event’s site. Users will be able to socialize, participate in dance contests, create user-generated play lists, take pictures, and sign a yearbook.

Leading up to Prom Crashers, users can secure prom dates or groups, discuss plans in Gaia Online’s forums, and purchasing prom fashions, including exclusive limited edition Christian Siriano avatar prom pieces. Siriano’s designs are available for purchase with Gaia Gold, Gaia Online’s virtual currency, or Gaia Cash, standard U.S. currency.

“At Gaia Online it’s important to us to listen to our users and provide them with a place to hang out that is a natural extension and enhancement of their real-world experiences,” said Scott Kinzie, vice president of creative and user experience, Gaia Online. “With Prom Crashers, we wanted to take a completely new spin on an old tradition, and who better to help us than an edgy young fashion designer like Christian Siriano who embodies the independent and innovative spirit of our Gaians.”