Liv and Bebe in the Boom Room

10/9/2007 12:25 PM PDT
Like mother, like daughter? Not so much.

While Liv Tyler's model mama Bebe Buell bared all for breast cancer awareness, her daughter and mother Dorothea Johnson took a more demure approach.

As Liv posed for pics with mom and grandma, she quipped,
"TMZ -- aren't you the naughtiest website of all time?" And Mom Bebe mimicked TMZ's video clip intro music. "Boom, boom, boom!"

She's a fan!