ABC reporter Dan Harris really put his foot in his mouth during an interview with Entourage hottie Jamie Lynn Sigler.

It seems as though Harris forgot to do his homework before the interview and ended up making a huge ass of himself on national television.

So what exactly happened that was so embarrassing?

Well, Dan decided to ask a controversial question surrounding hot chicks and fat dudes. He asked the brunette beauty if she thinks beautiful women would ever date fat guys in real life like her character does on the show. Here’s the kicker: Jamie Lynn IS dating the fat guy from the show (“Turtle”, played by Jerry Ferrara) in real life.

Having no idea why the question is awkward for Sigler, Harris continues to laugh – until she finally reveals the news.

Funny thing is, Jerry isn't even really that fat. He's no Kevin Federline, that's for sure!

Guess there’s a lot to be said for fact-checking before doing an interview!

Watch the hilarity here. And watch a clip of Jamie and the supossedly “fat” Jerry Ferrara below: