Ashley Olsen  admits shocking black-outs, crippled by fear.

The 22 year old ne'er do-well  revealed her deepest fear in new coffee table book written with creepy-do-everything together twin sib, Mary-Kate.

"I never really remember how an interview went," the blonde bantam revealed in the book. "I guess I black out.

"I just get very anxious. I'm really not great with crowds or big groups or public speaking.

"It's just something about being in front of that many people."

It's called agoraphobia, Ash - nothing a little Xanax couldn't cure.

Ask a therapist -- or M-K.