Kirsten at Roq la Rue posted on her blog that she likes Mika Ninagawa, I do too. We got 3 pieces at the Armory show a couple years back. It's actually a funny story, Mrs. OC Art Blog and I were interviewed by Japanese TV after making the purchase because they were in town to do a documentary on Ms. Ninagawa. I guess she is huge in Japan.
She is currently represented by Tomio Koyama Gallery ( Nara/Murakami) but I don't think she has been picked up by anyone in the states. Someone should grab her before Blum & Poe does. A couple of the pieces we purchased are attached: