I have a real "thing" for skinny, slender-hipped, flat chested ladies. They really get my motor going, and feature prominently in my private fantasies.
I also enjoy the company of ladies who are more voluptuous. I've had many a pleasant encounter with these ladies, but they aren't generally what I picture during my "special alone time".
I schedule a session with a lady resembling the former. I'm in communication with her leading up to our meeting, and the anticipation is growing, and at the last minute, I'm told I can't see her, but can see a lady resembling the latter instead.
After the build-up, it could certainly be considered a downgrade, because of what I had anticipated. Bait and switch is certainly applicable.
All the above is for illustrative purposes only. IRL, LNK likes hips he can get hold of, and if her tits will wrap around little LNK, it's on.