Mark Wahlberg on Justin BieberHey, Justin Bieber -- listen up. Mark Wahlberg is waiting for your call. Well ... more like, Wahlberg's daughter.

Wahlberg told George Lopez that his four kids, ages 6 and under, can't really appreciate what daddy does for a living, but his eldest knows that somehow she'll get to talk to Justin Bieber.

Little Ella Rae is obsessed with the singer, said Wahlberg, so his agent told Bieber to call the actor and have a little chat with the 6-year-old.

"I made the mistake of telling my daughter," he said. "So, yesterday she came to the doctor with me, she came to the office with me -- because we're waiting for this call ... I'm starting to get upset, man. I'm gonna have to mess his hair up a little bit when I see him." Watch the sob story: