Adrian Peterson — NFL Star Has ANOTHER Secret Child

Exclusive 1015_adrian_peterson_gettyAdrian Peterson fathered a 4th child … a 3-month-old girl … and the mother was a waitress at a popular Minnesota nightclub, our sources has learned.

We”ve confirmed … the child is living with her mother in Minnesota.

Sources close to the situation tell us the child”s last name on her birth certificate is listed as “Peterson.”

On the day Peterson”s 2-year-old son Ty passed away, the mother of AP”s 4th child posted an emotional message on her Facebook page about the situation.

“Today has been a long day finding out my [daughter”s] brother passed away and knowing that she never even got to meet him.”

Sources connected to the situation tell us … the mother of AP”s 4th child first met the NFL star while serving him as a VIP waitress at a place called Seven — a steakhouse, sushi joint and ultralounge all wrapped in one.

It”s unclear how involved Adrian has been in the child”s life — but the mother recently posted a photo showing the child decked out in Minnesota Vikings gear, so we”re guessing they”re cool.

Peterson has fathered 3 other children — a 6-year-old daughter, a 2-year-old son and another son, who died just months after AP learned he was the father. 

We called AP & the child”s mother for comment — so far, no word back.