When a fash-off concerns two unrelated celebrities, it’s bearable. But when the clashers in question are sisters, things get a little hot under that Valentino collar (pardon the pun).

Kim Kardashian and sister Kourtney stepped out in the same Valentino leather biker jacket (sold out on Net-A-Porter, we’ll have you know!), albeit not on the same day! (Can you imagine the horror?!). Both sisters put their personal stamp on the buttery soft, lambskin leather beauty, giving us two very different looks.

Older sis and mum-of-two, Kourtney went for all black, pairing hers with a draped dress, a Hermès Birkin bag and Valentino Ruffle boots. But boring it was not, as Kourtney added exciting accents to her look with a bright red lip and a super-cute leopard print furry beret.

Also going for all black, camera-loving Kim adopted a Kanye-inspired and somewhat worrying look. She paired her jacket with leather leggings, a Céline Crocodile Luggage Phantom Tote (the sisters definitely share a penchant for uber-expensive arm candy!) and Kanye West Nike Air Yeezy 2 sneakers, natch.

Sibling rivalry can get pretty ugly, but we can only go with one of the K’s on this one… Sorry Kim, but Kourtney’s perfect grunge-luxe mix style steals the show!

Kim, we love the top-knot and, of course, that beauty of a Valentino biker, but please ditch those sneakers, even though your beau has a lot to do with them!

Which look are you digging, Kim’s or Kourtney’s?