Andrea Gabriel

Feeling the pressure to make her first Waldorf Designs fashion show a success, Blair must rely on help from an unlikely source, butsome unexpected scheming causes a scandal on the runway. Serena discovers that befriending Steven's (recurring guest star BARRYWATSON) daughter, Sage (recurring guest star SOFIA BLACK-D'ELIA), is trickier than she thought, especially when she is forced to puther issues with Blair aside to make Sage happy. Nate publishes Dan's first serialized article, causing a stir and producing aserious threat. Meanwhile, Chuck begins to look into the clue that Amira (recurring guest star ANDREA GABRIEL) left behind, whichmay help uncover what Bart (recurring guest star ROBERT JOHN BURKE) is hiding. Plus, style icon ALEXA CHUNG makes an appearance. Also available on Amazon Instant Video and VUDU

Trying to prove herself in adult society, Serena hosts the Central Park Conservancy's big gala, of which she is now the newest Board Member, and she and Nate both learn something shocking about their significant others. Blair prepares to debut her new fashion line, but a rival from her past holds the key to her future. With the help of Georgina (recurring guest star MICHELLE TRACHTENBERG), Dan lands some meetings with publishers, but he must decide if he is willing to sacrifice his integrity in order to get his work published. Meanwhile, Chuck tries to persuade Amira (recurring guest star ANDREA GABRIEL) to help him look into his father's past, even if it means jeopardizing Lily and Bart's (recurring guest star ROBERT JOHN BURKE) relationship. Recurring guest stars BARRY WATSON and SOFIA BLACK-D'ELIA also appear. Also available on Amazon Instant Video and VUDU

In the sixth season premiere, after a brief encounter abroad, Chuck and Blair make a promise to each other about their relationship … which leaves them once again apart. Dan, with some help from an unlikely ally, Georgina Sparks (recurring guest star MICHELLE TRACHTENBERG), is writing a scathing tell-all book that can only mean trouble. Meanwhile, as the sole head of The Spectator, Nate is making his own decisions and is ready to go up against Gossip Girl. As word spreads that Serena is missing, the gang bands together to find her and are shocked by what they find. Recurring guest stars also include BARRY WATSON (7th Heaven, Samantha Who?) as Steven, ANDREA GABRIEL (Lost) as Amira, ROBERT JOHN BURKE (Person of Interest, Rescue Me) as Bart Bass and SOFIA BLACK-D'ELIA (Skins) as Sage. Also available on Amazon Instant Video and VUDU

The End: The critically-acclaimed and groundbreaking show concludes in this LOST Series Finale Event. Battle lines are drawn as Locke puts his plan into action, which could finally liberate him from the island.