Charlie Sheen -- New 'Angels' Identified ... Hardcore Porn Vets

One is beautiful ... one is brilliant ... and they're all bangin' Charlie -- at least, that's the presumption because Mr. Sheen's new "angels" are all well versed in the art of screwery, TMZ has learned.

After some hardcore research -- and we mean HARDCORE -- we've finally identified all three of Charlie's new lady friends ... and, shocker, they're all veteran porn stars.

Ladies and gentlemen ... but mostly gentlemen ... meet (from left to right) Jayme Langford, Jana Jordan and Celeste Star.

A few fun facts about Charlie's Angels:

- Jana Jordan has starred in more than 100 adult films including Power Munch 3 & 5 ... and she's been nominated for a ton of AVN awards.

- Celeste Star doesn't just act in porn ... she's also a porn director ... although she currently only has one film under her belt.

- Jayme Langford studied bio-ethics at the University of Judaism in Los Angeles. UJ officials pulled her financial aid though after discovering she had starring roles in a bunch of porn flicks.

Bonus Fun Fact: The blonde and the redhead have shot at least 2 sex scenes TOGETHER. There might be more ... but our computers are gonna go blind if we continue to research.