Jenny is mostly in her Constance uniform or in the clothes "designed by her". The first one is her dress to the white party and the second is for the guerilla fashion show by her.
Jenny looked lovely wearing her Blumarine Fall 2009 dress to the cotillion. Her blonde hair, red lips and black finger gloves make this look perfect and she looks even better than the runway model.
Episode 13 ("The Hurt Locket")
Taylor Momsen looked gorgeous in this episode in her black Andrew GN fall 2009 dress. The web detail on the yoke of the dress was pretty different and the stack of bangles added to it made the look perfect for the character of Jenny.
Season 3, Episode 20 ("It’s a Dad, Dad, Dad, Dad World")
Jenny wore a beautiful Marchesa S/S 2010 dress. I love the colour and that it is something we dont usually see her in. However, I wish her makeup was less dark and goth. A bright lip color would have livened up the look.