Madonna’s not adopting any more African babies, a rep for the singer said on Wednesday.

“These stories are not true,” publicist Liz Rosenberg insists. Rumors of the pending arrival of a second Material Child from the Motherland first resurfaced late Tuesday, after The British Sun claimed the star, who turns 50 on Saturday, was thisclose to adopting a 3-year-old Malawian girl named Mercy.

Liz says the Material Mom is “busy preparing for her tour. Not adopting another child.” She adds, “That’s too much multitasking even for Madonna!”