Now the former Gossip Girl star has done it again. Just without the outlandish outfit.
In a new spoken-word video for her band, the Pretty Reckless, 19-year-old Momsen recites words from the track "Under the Water" as close-ups of the actress-turned-singer's various body parts are shown in glorious black and white.
"Lay my head under the water/Alone I pray for calmer seas/And when I wake from this dream with chains all around me, I've never been free," Momsen, in part, can be heard saying.
The one-minute, 15-second clip ends with a full-length shot of Momsen standing completely naked.
If you don't count her signature raccoon eyeliner, of course.