Can anybody help

I am fed up with feeling like crap in work.
I don't have a uniform as such but i do have a huge blue jacket,which don't get me wrong, doe's the trick,but doesn't do anything for me!
I know work isn't a fashion parade, but surely, there must be some sort of uniform or something out there that makes all us women feel abit good about ourselves. Like most women,if you feel that your clothes are not making you feel good,you tend not to make effort with anything else i.e make-up,hair.
I know i don't,so if there's anyone out there that can help me, i would be so greatful!
Thanks xx