Earlier today, Morning Musume's Tanaka Reina posted a picture of herself with her new baby. She apologized for not telling everyone earlier about the baby.
"Everyone, I have an announcement to make.
I, Tanaka Reina
have a child.
I'm really sorry I didn't say anything up until now.
(Photo of baby seen above)
Isn’t she cute <3
She’s a little girl~~~~~ <3
Today is April 1st, April fools *_*
Did I trick you guys? (*´?`)"
Happy April Fools from Tanaka Reina!
Source: Tanaka Reina's Official Blog
Thanks for the tip Maryam!