Alessandra Steele, portrayed by Marina Squerciati, is Dan Humphrey's publicist and Chuck Bass' ex-fling.
Alessandra is seen to have brown hair on the show, and is quite beautiful. During a Valentine's day party which she attended single, Alessandra drunkenly flirted with Chuck. After seeing a photo of Dan kissing Blair, Chuck decided to return Alessandra's advances to get revenge on Dan by sabotaging his upcoming book.
she also has a twitter named Humphrey Hater or @IHateHumphrey, last tweet was :
☀Humphrey Hater @IHateHumphrey 6 Dec 2011
Humphrey/Inside may have "won" but really he lost. #loser4ever #sorrythetruth
she has 127 tweets, she is following 13 ppl and she has 1,645 followers