Here's fitness guru Kayla Itsines' body program that apparently works. We say that because they uploaded a picture of a woman who just gained some booty after committing to their program for over a year. Believable? Or photoshop? Check it out below:

The Internet didn't seem to think so:

Liza Parker, the 29-year-old whose butt was in the picture decided to show some Instagram proof.

She said:

so here's me making a fool of myself in my kitchen! ? But I wanted to have some real talk with all of you and thought it would lighten the mood ✌ I woke up yesterday to @kayla_itsinesfeaturing my BBG progress pic. I couldn't believe it! I was pretty jacked! Then the Internet trolling started? It shouldn't have bothered me, but it did. I was accused of "getting surgery" to achieve my figure and that I had "photo shopped" my picture. Both completely FALSE. There was a lot more said. Some of which were absolutely hurtful & terrible? I have seen these comments on other progress pictures Kayla has shared and I just don't understand it. As someone who is very open on social media I understand that everyone is entitled to their opinion and I've dealt with negative comments in the past. However I'm never okay with body shaming or trying to discredit the hard work someone has put in?On social media we usually share the best of the best. We find the best light, the best angle, and quite often the best filter and it may not accurately portray what that person looks like every day. I was feeling pretty good the day I took my booty progress pic ? I put on my fav shorts, found some good light and posed in a way that I felt accentuated the gains I had made. I didn't think I would ever be attacked for it ?For me it has always been about the strength and confidence I have built in addition to the physical gains. I know I shouldn't let comments from people who don't know me get to me but I felt I needed to stand up for myself. This is ALL me. And I love this program. And it works! I love all of you for being so supportive always. Stay classy fit fam! ?

So, not photoshop?