Exclusive Details

It's good to be daughter of the President of the United States -- TMZ has confirmed Sasha Obama got to visit the set of "Pretty Little Liars" ... and she didn't even have to fetch coffee!

According to our sources, 13-year-old Sasha (and one lucky friend) hit up the "PLL" set on Thursday ... and hobnobbed with the entire cast.

As we reported, Malia Obama got a week-long gig as a production assistant on Halle Berry's new CBS show "Extant."

So, Malia worked for one week -- while Sasha got to be a fan girl ... without manual labor.