The model and TV presenter played herself in a cameo on the hit show in the episode 'Dirty Rotten Scandals'.
Chung appears in the episode at a catwalk fashion show that Blake Lively's character Serena van der Woodsen is attending. After one of the models strips down to her underwear, Serena loudly storms out of the show in disgust, causing other audience members to also leave.
The mass evacuation leads Blair Waldorf (Leighton Meester) to panic and attempt to usher Alexa Chung out onto the runway.
However, with a baying crowd facing her, she refuses, saying: "There's no way I'm going out there..." before heading off backstage.
Chung made her name as a TV presenter on the recently axed T4 brand on Channel 4, before leaving the UK to pursue a career in America. She is currently in a relationship with Strokes guitarist Albert Hammond Jr.