Curves are pretty.
Seriously,
It's something that a woman either has or doesn't. No amount of foam rubber can fix it.
The whole noticing cleavage thing started when I was in ballet....You know, the super-skinny stick figure ballerina type was what we all wanted to be.
OK, 'cept mine had more weight at the bottom. Even at 99 pounds I had hips :)
ANYHOW, there was this girl in the professional troupe that was pure magic to watch. She was gorgeous! When she was onstage, you didn't look at the prima-ballerina.
At first, we couldn't put our finger on what made her different.... then it hit us! She had actual CURVES.
Granted, it is rare these days, but ballet looks WAY different when done by a woman with boobs and a butt instead of being done by a stick.
Which is why I moved on to the dance I do now. Boobs are nice, a butt is nicer and even a little bit of a love handle makes your shimmies look even better :)