Kendall and Kylie Jenner Skip Pants to Show Off Their Socks for Rob Kardashian's Arthur George Line

Kris Jenner proudly tweets pics from all-in-the-family photo shoot

Lucky for Rob Kardashian, he's got more than a few models in his family to turn to when in need.

Sisters Kylie and Kendall Jenner today offered up their their skills—and shapely legs—for an ad campaign for their big bro's Arthur George line of designer socks.

And, fittingly, the all-in-the-family moment was documented by mama Kris Jenner, who posted a couple of pics from the shoot and some encouraging words.

"Love this photo shoot for@Arthurgeorgesocks proud of you @Robkardashian," the Keeping Up With the Kardashians matriarch wrote on Instagram.

In one shot, Kendall and Kylie join several other pantsless models in long-sleeve button-downs and colorful knee socks, while another, in which the group wore all white, showcased Arthur George's thicker, more cozy-looking designs.

Are anyone else's feet feeling a little too bare right now...?

Tune into new episodes of Keeping Up With the Kardashians on Sundays at 9 p.m., only on E!