Hi!
There's a line with 5 tabs on your profile page (awards, stats, appearance, equipment, score history). Click on appearance, then on "choose a different avatar" and the selection of the ones available will show up (male-female choice is on top of the small window that will open, different styles are on the bottom). You'll manage from there. Pink's nice though, lol.
Jure
Edit Yep, you found it alright, I was late as usual.