Chloe has shared several snaps of their evening together and it looks like they had a great time partying at Essex nightspot Club 195.
In one photo, Chloe and Demi - who made her TOWIE debut earlier this year - are showing off their pretty outfits, both from Rare London.
Chloe's frock features a halterneck and flared mini-skirt and she has teamed it will a gorgeous pink clutch. Demi, meanwhile, opted for cute monochrome co-ords, a black vest and feathery bag.
Commenting on the Instagram picture, while also referring to Demi by her nickname, Chloe wrote: "Last night in club 195 with Bam Bams @demsims #sisters both rocking @officialrarelondon."
Meanwhile, Chloe has also posted a snap of herself, her boyfriend and TOWIE co-star Elliott and Demi hitting it up on the dance floor. Aww, it's nice that they all get on so well!
It's an exciting week for TOWIE fans, as the new series hits our screens on Wednesday (8 October). Kicking off on new channel ITVBe, series 13 will begin with a two-part Ibiza special.
Last week, the official promo was released and it appeared to hint at tension between Chloe, Elliott and Mario Falcone - who is making a comeback to the show.
Also, Chloe has spoken out and assured fans that there will be no reconciliation with Ferne McCann. Drama, drama, drama - and it's not even started yet!