Sometimes bra straps peek out and there's nothing you can do to stop them. And strapless bras don't work for everyone (they don't offer enough support for ladies with bigger boobs to wear all day). Many styles of shirts end up revealing bra straps. I don't really see the big deal about it if they're peeking out.
Some clothing styles leave no choice, but I either avoid those or opt for a strapless bra. I think so many cute outfits are ruined by showing bra straps. Not talking about straps that slip out. I don't care about girls who wear it this way, just not my thing personally.
Depends on what kind of shirt a girl is wearing. I can only show my straps if I'm wearing off shoulder tops and only if the color of the strap is black. :D
A lot of people find it wrong, me personally I don't really care. People freak out about seeing a bra strap and I'm just like call Victoria cause her secret is out. It's normal for teenage girls and women to wear a bra. So does it matter if you see the strap?
With all the sheer/lace fashion trends nowadays, no one really cares, but... i don't know how i feel about seeing women in white (see-through) tops/bottoms and loud colored bras and panties. Bras are not accessories.