Birdy the Mighty: Decode (2008)

Blurb:
Birdy is a jaw-dropping, pin-up sensation with a secret. Under the cover of darkness, this dream girl becomes a bad guy’s worst nightmare. Birdy dons her crime-fighting costume and hits the street as a lethal, interstellar federation agent charged with nailing the most dangerous criminals in the galaxy. Her latest case involves a gang of extraterrestrial terrorists and a stolen space weapon that could nuke every living thing on Earth. Birdy’s got the moves to stop them dead in their tracks, but there’s one big problem: she’s got a nasty habit of going berserk, and somebody always gets hurt. Yeah, Birdy may be dreamy, but she’s also the only thing more dangerous than the bad guys.

Source: www.anisearch.com/anime/4724