Let's keep in perspective what a size 14 or even 16 looks like. The OP mentioned Gianna Michaels... Well I've never seen her in person, but I think she might be around a 14 or 16.
Check out this pic (hotlink)
The sizes are UK sizes. The 8 is a US 6, the 12 is a US 10 and the 16 is a US 14.
http://theweightinggame.ivillage.com...s/fabulous.JPG - link in case it doesn't work.
http://theweightinggame.ivillage.com...tness/2008/07/ - source
I am between Tillie and Anna down from being around Caroline's size.