what do u say when a girl asks this?

we ask that to see if you are going to be honest or lie it would be in your best bet to lie lol

There are some cuts of dresses that look good in a woman. When a girl asks you that question she is also asking your opinion whether she looks good in that dress. You must have noticed that there are some styles of clothes that make your love one nicer wearing them and there are some also which make look older or thinner. What looks good in another woman may not look good in me. There are diffences in our body construction that makes this so. So women will try on clothes that appeal to them and then will ask their companion/s how it looks on them. Be kind enough to tell the truth at all times when questions like this are directed to you.

You always have to tell the truth. I do.

there's too many reasons to pick one specific reason just for that question... One, as the other one said there, it's to see if you lie, Another, is because we think that we look that way and want to see if you like what you see It can have to do with self conciseness, fears, how comfortable the girl is with herself, and even how she feels about you.... really, i don't think there's one answer fits all here...