Ena Kawamura posted this on Twitter. Can't figure out if it's a boy or girl.
Either way, CONGRATULATIONS! , Ena. おめでとう!
A beautiful baby! 
Congratulations to Ena, she mentioned in her blog that she gave birth to a baby girl.
I don't have a Twitter account nor I can read a lot of kanji but I'm glad to know she mentioned me. I've been visiting several places lately so I didn't have the chance of meeting another member. I'll be staying in Japan until February 25 so I'll try to attend to her concert in Shibuya.
Sorry for my poor translation, but I think this is what she wrote:
My fan from Argentina came to my concert again today

It is his first trip to Japan and he even spent that valuable time to come and see me.
by the way, it is hard to believe that his favorite member in Muscats is me.
I laughed when I heard it, but I was really happy at the same time.