Many people look good in uniforms, especially if fitted right to show that they are fit and healthy, whilst still keeping them sexy and alluring--without the need to expose flesh. Jadzia was always a good example of this, the vast majority of the time she was in uniform and looked great, without having to highlight the fact she has the necessary organs to breastfeed.
Kira always was in Bajoran uniforms, though I do think after they got rid of the old shoulder pad version for her, they should have done the same for all the extras. But she did look great in the Starfleet one as well, shame we never got to see later DS9 seasons where she would have made the switch permanent.
Commander Austin Harris, First Officer, Deep Space Nine (by FltCpt. Bossco)
8.01 - Darkest Before Dawn
(Chapter 8 added, 12/09/2015)