Body confidence is a tricky subject . As you guys hae already mentioned very few people have a perfect body .I think women tend to be more critical of themselves than guys.
I think the first thing that needs to be done is to accept your own body and learn to like it. At end of the day if you don't appreciate your own body then how can one expect someoine else to do the same.
Before I lost a lot of weight I did cringe at what I saw in a mirror and decided to do something about it and that was without comparing myself with anyone else .Body confidence issues can affect ones performance in the bedroom. For example sex with us became boring as all I wanted to do was to slip between the sheets . But that was my body confidence holding me back. Women IMO are better served to cope with this as they have an array of lingerie that can cover up their bumps and maintain a degree of confidence.
Sometimes doing what Monday Sixteenth has done can often help. I dare say the worst part of her experince would have been the initial esposure to others but once done its probably given her , I am guessing here lots more confidnce than she had prior to this.I must admit even now I wouldn't have the bottle to do something like that so its great that she feels so good about it and a very big well done.
Going back to my own situation , once I started appreciating my own body more then we became more adventurous in the bed room including many things not done previously such as role playing .
So to start as I have said before is to get the opinions of ones OH first and then take it from there . At end of he day its only their opinion that really counts and nobody elses as it is only your OH is the one who will be seeing you naked from time to time .