It's called marketing. Guys will buy a crappy product from a girl showing cleavage, but wouldn't buy the same product from a guy in a suit.
It's life.
A funny story: I was in a store buying a pair of jeans. A nice looking asian girl is serving me, probably about 20 years old, showing a little bit of cleavage but nothing serious. If you have ever worked in that type of retail, you know that they are often commissioned on selling "extras" with the regular stuff, overpriced socks, whatever. Well, this girl decides as I come out of the changing room to look in the mirror that my jeans would really need a new belt.
The girl pulls out a belt, gets down on her knees in front of me, and puts the belt on me. You guys can picture exactly the position she is in as she reaches around to get to the back loops.
Trust me. I bought the belt.
