As Kim Kardashian continues to keep her post-baby body under wraps, and Khloe deals with the fall-out from Lamar Odom's drug addiction, momager Kris Jenner has stepped up to ensure that the family keeps churning out R-rated Instagram pics. The fifty-seven-year-old uploaded a highly stylized bikini shot to Instagram on Tuesday. But fans were hardly thrilled.

"Last day of summer gonna miss you," Jenner captioned the pic, which showed her submerged in a pool wearing full makeup, a blue bikini top, and a chunky silver necklace. (The last day of summer is on September 21, next Saturday.)

But her 1.9 million Instagram followers were less than impressed.

User @nolwah wrote, "Plz Plz Plz Kris. Leave the modeling to your daughters. Plz."

Wrote @jessicafrithx, "If that's not airbrushed I don't know what is!"

And yet another commenter chimed in, "This old b**ch trying too hard."

Kris has never been shy about showing off her nipped-and-tucked body before, even posing in a bikini on the cover of Australia's New Idea magazine last year.