Kim Kardashian flaunts VERY tiny waist as she celebrates nephew Mason Disick's 13th birthday in LA

dailymail.co.uk:

Kim Kardashian stole the show as she arrived at her sister Kourtney Kardashian's eldest son Mason Disick's epic 13th birthday bash in Los Angeles on Saturday night.The SKKN founder, 42, flaunted her shrinking waistline in a pair of black leather high-waisted pants covered in sparkly black jewels.She styled the eye-catching trousers with an ultra cropped Up in Smoke Tour tee that stopped just below her bust.

Scene stealer: Kim Kardashian stole the show as she arrived at her sister Kourtney Kardashian's eldest son Mason Disick's epic 13th birthday bash in Los Angeles on Saturday nightKim's pants came with a matching pint-sized purse that was not large enough to hold her cellphone.She accessorized with a flashy diamond choker necklace, as well as a silver cross pendant chain.

Her nails were painted a baby pink to match the color of her plump pout.The mother-of-four rocked her signature warm brown smokey eye and her lashes were coated with mascara to create a dramatic, spidery look.Kim's golden strands fell in soft curls to her waist.

Besties: Kim palled around with her 'momager' Kris Jenner, who looked chic in all-black  Hell for leather: The SKKN founder, 42, flaunted her shrinking waistline in a pair of black leather high-waisted pants covered in sparkly black jewelsShe paraded around the venue in a pair of pointed-toe boots before stopping by the party's Van Leeuwen Ice Cream truck for a treat.Kim palled around with her 'momager' Kris Jenner, who looked chic in all-black.