I think everyone who has a twitter should reply to lady gaga's twitter. do @ladygaga first in your post..
maybe compliment both her and Ayu (maybe say Ayumi Hamasaki?) and say they should meet or talk, etc....
I can't think of a better way to phrase it, but I hope you get the picture!
I've already reply tweeted her... I hope maybe enough people tweeting will have her at least see a few of us...!