"Gossip Girl" ran for six seasons on The CW ... There were also some cameos from model Karlie Kloss and Lady Gaga, who played themselves. Here's a look back at some of the best celebrity surprises.

Lady Gaga is the latest champion in our Winner of the Week series. Not since the days of “Poker Face” and her iconic Gossip Girl cameo has the future looked so damn bright for Lady Gaga.

Lady Gaga, ever the iconoclast ... find something for the girl who has everything.

Lady Gaga is in stupid love ... She continued, “I think I wanted him to know that I was a family girl.” Gaga gushes about Polansky throughout the interview, saying, “He just loves the ...