Hm, seems Lady Gaga is a Kuu fan...
Small translation from the article:
Vivi magazine told the girls that they want to see them collaborating on a PV together. Gaga answered she absolutely want to do it, Kumi said it would be very fun and she wondered how the PV and fashion will turn into.
Lady Gaga said Kumi's wedding dress was very cute (from the live) and she asked if Kumi will get married soon. Kumi just said that it isn't really planned.
Credits to RpgN @ JPM
EDIT:
@Lacus Clyne:
Thanks for the videos!
I love the part in the second video when Kumi is freaking out in order to make Show laugh while he's drinking tea. It's epic!

Or the part where they're playing the taiko drums, too funny! Hoooooyaaaaaaa!