Lionel Richie says the stress of his daughter's expanding career is most likely the reason for her shrinking dress size.
"I know what's happening with her right now, she's a nervous wreck," Richie says of Nicole, who was heavier when she co-starred with Paris Hilton on "The Simple Life."
"She's like her father, you can either blow up or you can shrink away," the R&B crooner said Monday night in New York. "And right now, she's just feeling a little bit of the pressures of her new business. So in this case . . . she will be all right."
"Dad is on the case," he said.
The 24-year-old Richie has said she was always really thin, but went through a heavier stage during the first season of "The Simple Life."