Robert Kardashian proved he too can keep himself groomed — just like the rest of the Kardashian clan!! — as he headed out this afternoon (November 12) to get his nails done at the Beverly Hills Nail Salon in Beverly Hills.

After having his feet and hands tended to for nearly an hour by a group of nimble estheticians, the younger brother of Kim, Koutney and Khloe casually strolled out of the salon after leaving a $6 dollar combined tip. (That works out to be about two bucks per employee.)

Meanwhile, older sis Kim is once again obsessing over the Kardashian butt — but this time she’s chosing to point out Rob’s oversized derriere via her Twitter account.

After participating in the Kardashian Charity Knock Out event in Los Angeles over the weekend, Kim posted a rather private photo of Rob and tweeted: “Seriously Rob has the biggest butt! LOL”

CLICK HERE to check out the photo and draw your own conclusions.