Here's a few additional "clues", not that you need them at this point - she's Kanye's ex... he recently involved her in a spat he had with Wiz Khalifa, which resulted in something of an overshare regarding his (alleged) sexual preferences... Kim then invited her around to Kris's house for a kiss-and-make-up selfie...
Indeed it is Amber Rose, just not as you know her. She posted this throwback photo to her Instagram captioned: "#TBT Muva at 12 Sidebar.... I was 5'9 :-/" 5 foot 9 aged 12... Wowsers.