While she denies posing to give herself a thigh gap, the mother-of-six
did admit last week that she had a tummy tuck
. "So you all know after the twins I had a hernia and while fixing the hernia I opted to have a tummy tuck as well! My scar is very low and very thin much thanks to @drhochstein ? but I still had a scar. I could wear bikinis you would never see it," the 37-year-old reality star
captioned another selfie. "I showed @simonourianmd1 my scar he did coolaser on it ONE treatment and look!!!! You can't even see my scar!! I love these 'Baywatch' bathing suits but never thought j could wear one! THANK YOU to 2 amazing doctors who love what they do and they do it with passion!"