Moore, 29, says cutting her brunette locks would feel liberating and the impulse is so strong she has even considered shaving her head completely, reported People magazine.
"I've always wanted to really cut my hair, like, super, super short. I did once, I've always thought about shaving my head too. That's always intrigued me," she said.
Moore, who is married to singer Ryan Adams, says her husband would be supportive if she ever decided to get the chop.
"I don't think my husband would object to it! He would totally be down for that. I think he'd think it'd probably be pretty punk," she added.