The pair were thought to have briefly fallen out earlier this year, but those rumours were soon dismissed by both Rita and Cara and they now appear to be intent to showing us that their best friendship is still going strong.
Yesterday (1 October), the tight twosome were spotted together on numerous occasions all day in the French capital.
Not only did they dine out for lunch at L'Avenue restaurant and attend the Chanel SS14 show with Katy Perry, Rita and Cara then went on to a film screening and a cocktail party in the evening.
And of course, each meal and event required a different outfit.
For lunch, 22-year-old Rita donned an all-black leather ensemble, which she wore with a silk shirt, sunglasses and a pork pie hat.
Cara opted for a more laid back look and wore a pair of tartan trousers (from Karl Lagerfeld's new Punk capsule collection) with a fun 'High Brow' beanie hat that poked fun at her famous eyebrows.
Shortly after they'd grabbed a bite to eat, the pair then headed to the much anticipated Chanel fashion show.
Pop star Rita tucked her long blonde hair extensions into a chunky dress, which featured feathers on the shoulders and a large collar made of the same thick fabric as the frock.
She also carried a tiny quilted silver handbag and wore a pair of black stilettos.
Meanwhile, her model BFF kept her tartan trousers on and changed into a plain white T-shirt, ready to be dramatically made over with a short blonde wig and rainbow coloured make-up to walk on the Chanel runway.
Following their fashion commitments, Rita and Cara donned their glad rags for the Mademoiselle C film screening and after party.
21-year-old Cara looked gorgeous in a tailored black playsuit with a plunging neckline and a tiny waist belt.
She accessorised with gold jewellery a pair of black heels and went for gothic glam make-up with a dark plum coloured lip.
Rita failed to make as much of an impression as Cara though, since she stepped out in a bizarre punk-inspired outfit.
The 'Shine Ya Light' singer wore a tartan jacket (again, from Karl Lagerfeld's new Punk capsule collection), a netted headband and a white shirt that was undone to reveal a black lacy bra underneath.
It also looked like she was wearing the same leather trousers from her lunch date with Cara earlier.
We wonder if we'll see these two stuck to each other's hip for the rest of the week?
Which of Rita and Cara's outfits do you like the most? Let us know below, as the best comment each week wins £50!