Updated

NEW YORK -- The fashion model daughter of legendary rocker Keith Richards was arrested Tuesday night after cops caught her scrawling a message on the wall of a Manhattan convent, authorities said.

Theodora Richards, 25, was arrested at 10:42pm ET in front of 190 Prince Street in SoHo and has been charged with making graffiti, possession of a graffiti instrument and possession of a controlled substance, sources told the Post.

Richards was spotted writing "T-Heart-A" on the building, which houses St. Anthony's Convent, sources said.

Richards -- a self-described "bad girl" and friends with troubled model Kate Moss -- also had marijuana and anti-anxiety Xanax pills in her possession at the time of the arrest, sources said.

Sources said Richards had eight pills in her possession and told cops she had bought them from someone on the street.

Richards, who lives in SoHo and has worked as a model, is the daughter of Patti Hansen and the Rolling Stones guitarist.

Richards got her modeling start at age 16 when she, her younger sister Alexandra and Elizabeth Jagger, daughter of rock star Mick Jagger, modeled for a Tommy Hilfiger campaign.

She has since appeared in various fashion magazines, including Vogue, Glamour and Rolling Stone.

In a 2006 interview, Richards said she's not interested in non-stop partying and claims she is rebelling against her Rolling Stones father by being boring.

"My dad's generation was all about rebellion," she told the British celebrity site FemaleFirst. "I'm rebelling against my generation in a softer way.

"Many of the kids around me just want to go out and party every night but I don't. I'm not a big fan of drugs. Everybody's had their own experience."