For the film festival, the actress wore not one but two outfits designed by her boyfriend Brooklyn's mother, Victoria Beckham.
The pieces perfectly oozed the star's laid-back vibe, with expert tailoring and a minimalistic tonal base that screamed the 'Beckham' aesthetic.
At a talk about her movie The Miseducation of Cameron Post and the Outfest Queer Brunch, Chloë wore a silky black button-down shirt, black trousers and gold heeled books.
With her blonde hair tousled into loose curls and her make-up stripped back, Moretz seemed to dress as a mini Posh Spice for the occasion.
Later in the day, the 21-year-old donned a white button-down shirt with a ruffled collar, a black jacket, black fitted trousers, and sparkly silver heels, for the Creative Coalition's Spotlight Initiative Awards Gala Dinner.
With a swipe of coral-hued red lipstick and her hair pulled into a bun, Moretz added some much-needed colour to her monochrome look and we for one couldn't love it more.
Of course, this isn't the first time Moretz has paid tribute to her 'mother-in-law'.
Last year, the actress wore a Victoria Beckham SS18 pink pinstripe suit to the Harpers Bazaar Women of the Year Awards in London, and has recently been spotted in Blighty wearing one of her navy-blue trench coats.