The Area Codes hitmaker, real name Christopher Bridges, was granted full custody of little Cai in January (15) after taking issue with ex-lover Tamika Fuller's demand for child support.

He convinced a U.S. judge he could provide the baby girl with a better home environment, but now Fuller is attempting to discredit his parenting skills by claiming Ludacris has hired a full-time nanny to take care of the tot, reports

She also alleges the rapper/actor was wrong not to disclose the fact he is expecting a child with his new wife, Eudoxie Mbouguiengue.

The couple only confirmed the pregnancy earlier this month (Mar15).

The baby will be Ludacris' third - he is also a father to teenage girl Karma, from a previous relationship.