Well, I will try to draw all Chaos Gods now, and I drew Slaanesh first, because of sacred number (6 - Slaanesh, 7 - Nurgle, 8 - Khorne and 9 - Tzeentch).
I used description from WH Wiki and lexicanum as a reference, but only changed hair color to silver (that was originally gold) because I hate gold, and yellow color as well. Dunno why.
Also there is no naked boobs here! Kinda surprisingly for a Slaanesh fan-art, but hey, description from wiki says "form-fitting armour", so no boobs, sorry.