Kim Kardashian -- Unaltered Ass Out in Bev Hills

Kim Kardashian took her Internet-breaking ass out in Beverly Hills last night ... prompting new talk about whether the instantly famous cover shot is Photoshopped -- or how MUCH it was Photoshopped.

Kim stopped and posed for pics outside Kendall James Salon -- but the best part of this video is when she's walking away ... because it's video, and we KNOW it hasn't been altered.

Admittedly, it's not the perfect comparison -- she's wearing clothes, after all -- but it's worth a look ... a long hard look.