Most Feminine Outfit for a Warrior Hawke?

If one of your criteria for "pretty" is form-fitting, you won't find a lot of that among the warrior armor. Rogue is your best bet there.

As for warrior, as with most things, being able to mod will open up a lot more opportunities, even if it's just swapping models to something you prefer.

I'm a big fan of the warrior starting armor. In fact, if I were going to play warrior, I would probably find a set that I liked (stats-wise) and do a model swap to those pieces for the appearance.
dragonage.wikia.com/wiki/Fereldan_Field_Armor

This model comes in various colors.
dragonage.wikia.com/wiki/Raider_Plate

Similar model with no shoulder plates.
dragonage.wikia.com/wiki/Mercenary%27s_Reinforced_Plate

This is a gorgeous piece. Unfortunately, there are no matching boots, gauntlets, or helm.
dragonage.wikia.com/wiki/Armor_of_the_Wall

This is a full set with the same model as above, but a different color. That can be changed with modding. This would likely be my go-to Act 2 model appearance.
dragonage.wikia.com/wiki/Stonehammer_Plate

A dragon design.
dragonage.wikia.com/wiki/Superior_Plate_Armor

I'm also a fan of the darkspawn set.
dragonage.wikia.com/wiki/Dissension

And of course the Champion set. You can use a mod to get rid of the "shelf" gorget/bevor.
dragonage.wikia.com/wiki/Warplate_of_the_Champion

Warden set from Legacy DLC.
dragonage.wikia.com/wiki/Chestplate_of_the_Fortress

DAO throwback.
dragonage.wikia.com/wiki/Marcher_Battle_Plate

Another DAO throwback.
dragonage.wikia.com/wiki/Dragon_Hunter%27s_Hauberk

(Keep in mind that these DAO pieces don't have matching boots, gauntlets, or helms.)