If you want to go braless, this will help. I used these for a dress that had some side boob action. Pulled them up and in... but getting the placement right takes some skill.

Breast Lift Tape

Hollywood Fashion Secrets

View Details

Usual Size: 4

Height: 5' 6"

Bust: 34C

I have to admit, applying these are not easy your first time around. But once they're placed, they are there to stay. Easy removal. Biggest difficulty is getting the placement right so it looks the most flattering is is most effective.