I spent alot of time looking for a padded/ruched swimsuit last year!
I love that one that Angie posted, but I also like retro-style swimsuits too.
Like this one:
http://tinyurl.com/3rz5wdo
I know alot of people don't like Victoria's Secret, but that's where I ended up ordering from since I could order by bra size (32 AA) and get the push-up/padding I was looking for. I got a padded tankini, but there are these cute one pieces this year!
http://tinyurl.com/3sv4466
http://tinyurl.com/4yvh66p
Good luck!