He's only 4-months old, but Kendra Wilkinson's son Hank Baskett IV apparently is already a ladies' man.

In a sneak preview of Sunday's Kendra, the infant makes the moves on Holly Madison, Wilkinson's BFF and former Girls Next Door costar.

"Are you a boob man?" Madison, 31, asks after the baby tries to grab her boobs (watch clip, above).

As she cradles the boy in her arms, Madison then remarks: "He's definitely going to grow up to be a lady killer."

In the clip, Madison also says that motherhood has mellowed out her former Playboy Mansion roommate.

"She's changed a little bit -- she's more calm, centered," Madison says of Wilkinson, 24. "But she's still the same Kendra deep down."

Watch full episode of E!'s Kendra Apr. 11 at 9 p.m. (ET).