And it looks like the besties are morphing into each other, as they both rocked up in panelled sports luxe outfits.
Rita opted for a halterneck frock from the DKNY resort 2014 collection, which featured cobalt blue side panels and a flirty mesh skirt.
The 'Facemelt' singer completed her outfit with a daring pair of gladiator-style buckled heels - she's not afraid of making a style statement!
Meanwhile, 'wifey' Cara showed off the figure that gained her Victoria's Secret Angel status in an eye-wateringly tight jumpsuit, also by DKNY, adorned with go-faster stripes.
The starlet added a rebellious edge to her look with DKNY trainers and sultry smoky eyes, courtesy of celeb make-up artist Lisa Eldridge.
When it comes to posh dos, this twosome never play by the rules!
What do you think of Rita and Cara's outfits? Let us know by commenting below as the best comment across the site each week wins £50!