Millie is first seen at Amber's launch party, attending with Caggie Dunlop. The two discuss the prospect of Spencer Matthews attending and his long-running feelings for Caggie. Spencer and Hugo Taylor join them for a drink. Later, Millie slips outside to reconnect with Fredrik Ferrier who she hasn't seen in two years, flirting with him. The next day, Millie joins Caggie for brunch, unimpressed at Spencer's flirting now he's in a relationship. Discussing Caggie's gig that night, Millie texts Fredrik to invite him. In the audience, she continues to flirt with him, and he asks her to lunch. The next day, Millie reiterates her concerns over Spencer's continued attention directed at Caggie, especially having now taken her to dinner after her gig. Preparing for Rosie Fortescue's dinner party, Millie shows Caggie a picture of Funda, who she'll finally meet. At the dinner, she comforts an overwhelmed Caggie, and breaks it to a persistent Francis Boulle that Caggie has no feelings for him.
- Series 1, episode 1: "Ad Victorem Spolias – To The Victor Go The Spoils", 60 minutes, E4, aired 9 May 2011
|Former cast members — last appeared in 2017|
|Emily Blackwell • Josh "JP" Patterson • Alexandra "Binky" Felstead • Ollie Locke • Akin Solanke-Caulker • Francesca "Cheska" Hull • Rosie Fortescue • Stephanie Pratt • Jane Felstead • Tina Stinnes • James Sandford|