In 2007, the new CW show "Gossip Girl" was branded "every parent's nightmare," as it showcased "the scandalous lives of Manhattan's elite."

Most of the actors and actresses that signed on for the series were relative unknowns, but in the past five years, the cast has been through a lot. Several co-stars dated each other, some transitioned to roles on the big-screen and others even showed us they were a double-threat with their singing chops.

Now as the beloved series comes to an end, click through the gallery to see how your favorite Upper East Siders have changed.