I was once asked by a tv reporter what size I was...I answered; "medium elephant"!
I didn't know my pants size then...and I'm still not sure of my pants size now.
But I do know that I use to wear XXXL or XXXXL t-shirts depending on the cut
and now I wear medium or more usually small size t-shirts.
Just plain old exercise and eating proper healthy portions did it.
Once I was at a party and a girl next to me said that she was going to really drink and eat because she had just spent the week detoxifying herself.
Figuring she was on some new aged fad diet I asked her "why?" She gave the biggest double-take I had seen for a long time and said that she didn't know why!
Crazy or what?