The MK2 look is really plain and boring in this day and age, imo. It's just too simple.
That's funny because I was thinking the opposite. The simplicity is what I like the most in her MK2 costume (it reminds me Psylocke). My favorite costumes for her are UMK3 and Shaolin Monks (big 90's feeling, that's what I like). And playing MK since 1993, I have always preferred the old costumes (MK1, MK2 & UMK3) for a lot of characters.
To be honest, and unlike the majority here, I really don't like her MKX main attire. The design is elaborated but mainy things don't seems to fit well together. I find the belt too massive, I don't like the armor pieces on her shoulders and breast, the top is oddly revealing. I definitely don't like the large pants with the over the knee boots (and to be honest, yes, I prefer the good old swimsuit...).
I think it will never happen but I would love to see a Shaolin Monks Attire DLC for her.
What I think about Kitana is more or less the same for a lot of other characters in MKX.
For example, J. Cage & Sonya looks too much like GI Joes or like characters from Resident Evil. I prefer when Johnny looks like JC Van Damme in Bloodsport...
Well, that was just my two cents.