I've heard guys don't like them, is that true.
Most Helpful Girl
Guys don't like the ones that make girls look fat or pregnant when they're not.
For example, Petra Nemcova is a gorgeous model, but in this dress, she looks beyond average:
Also, I have no idea who this girl is, but she's really thin but looks huge in this dress:
Same goes for the shirts that have this effect. Guys like to be able to see a girl's figure, not have it hiding below all of that fabric.2