How to Dress to Hide a Small Bustline

There a a variety of tips and tricks to make a small bust look bigger. Here are a few of the best.

Steps

Wear a push-up bra. Look for one that not only pushes your boobs up, but in also, for a more 3D look. Which will definitely add to your bust. Also you can tighten the straps to lift your chest as preferred.
Accentuate your neckline. Wear shirts with sequins or studs at the top. Ruffles are especially great. Or wear necklaces of any sort.
Tone your tummy. If your stomach puffs out more than your boobs it will make them look smaller. But keep in mind if you are young, your body is supposed to look like this still!
Apply makeup. Powder or bronzer work nice. Just smooth it over your boobs up to wear they finish off their round at the top your chest. This works best when paired with a push-up bra.
Tight tops can draw attention to your boobs.

Wearing low cut tops doesn't add to your bust. It only shows what should stay an intriguing mystery for your guy.
Gilly Hicks has good push-up bras that also push in too.

Don't apply make-up on your boobs everyday. Since there is a risk your make-up might smudge, and people might figure it out. Embarrassing!