Sean Penn has warned Robert Pattinson not to disrespect his daughter.

The 'Twilight' star is reportedly dating model Dylan Penn, and her father is said to have ''had a chat'' with him about their potential romance.

A source told The Sun newspaper: ''Rob and Dylan get on well and really fancy one another. It's obvious Dylan is smitten.

''But Sean had a chat with Rob recently. Sean knows what it's like to be a young, successful actor and the beautiful women that come with it.''

The 27-year-old actor has reportedly been seeing several women lately, and the 'Gangster Squad' star doesn't want to see his daughter hurt if Robert - who split from Kristen Stewart earlier this year because he was unable to get over her fling with married director Rupert Sanders last July - is ''playing the field''.

The insider added: ''He gave his piece about not getting too heavy with his daughter if he's playing the field, as he doesn't want to see her hurt.

''But it's backfired. Rob backed off but Dylan found out and has gone tonto at her dad.''