This outfit is still available, go to this location, copy and paste the link posted there : http://www.pixiv.net/member_illust.php?mode=medium&illust_id=11045885 I spent quite sometime to find it, hopefully it helps others. I don't see anything explicit at the link, I just made it unclickable to be on the safe side.

Quote - New guitar at poserclub (MayQueen by yagami)

RedViper has a gymnastics set for A4 as well (can't post the link but posted the pic at his site)