DREW BARRYMORE is such a huge fan of HARRY POTTER - she's letting him become a CHARLIE'S ANGEL.

The British schoolboy sleuth makes a surprise appearance in the upcoming Charlie's Angels movie.

Apparently Barrymore loves the boy wizard so much, she disguised herself as him for a scene in the detective babe-fest. Charlie's Angels director McG explains, "Drew dressed up as Harry Potter to go undercover."

And that's not all Drew did to promote her hero, she also brought Harry Potter books to the set and read aloud from them to keep cast and crew entertained.

(MB/WNWC/RC)

Source: WENN