The gorgeous reality stars looked amazing as they donned some glittering body art from Kiss My Fairy boutique as they enjoyed drinks poolside at the star-studded Ibiza venue.
Ferne and Billie both wore chic black swimming costumes for their day in the sun, but accessorised with lashings of silver and gold body glitter that sparkled in the sunshine.
Ferne tweeted later on: "Literally had THE best day @oceanbeachibiza."
The girls met up with EastEnders star Dean Gaffney at the club as well - we thought we spied him in the background of the photos above! Ferne later tweeted a picture of herself with him, saying: "I love Gaffers!"
Ocean Beach Ibiza has been a favourite of the Only Way Is Essex crowd over the summer. We've also spied Fran Parman, James 'Diags' Bennewith, Lydia Bright, Lewis Bloor, Georgia Kousoulou, Jessica Wright and Chloe Lewis, to name a few!
Also partying there have been Mark Wright, Michelle Keegan and Brooke Vincent.
For lucky Ferne, the party didn't stop when her Ibiza trip ended... she's now in Marbella to film the first episode of the next series of TOWIE, which returns to ITVBe on Sunday, 4 October.
Billie's also back in the cast this year but so far she hasn't been pictured in Marbs... perhaps she's flying out at a later date? Or maybe she's skipping this trip to stay in Essex with baby Nelly, one?
Ten reasons we want to be on TOWIE!