Clothing can be customized in-game. To my knowledge you never get a 'new uniform' though you can make alterations to your existing uniform at any time (for energy credits) via Ghemik in requisitions at Earth Spacedock.
Armor also changes how your uniform looks so keep an eye out for that ... but I think all armor has the same effect.
Can't see your pic (my problem not yours) so can't advise further.
Judging by the fact that she's wearing a mini-skirt, I'm guessing that's the TOS uniform option which is available via some of the pre-orders, and will not be accessible until tomorrow (with the corresponding retail keys). I can't remember which pre-orders you get it with, but you can check the pre-order FAQ page to find out.
Those are some huge tracts of land! I always end up decreasing bust size when I make my female toons, but I must say, that image makes me giggle. She reminds me of Brandy from Liberty Meadows!