More than a couple members of the FADER team are interested in physical therapy and Pilates-type aerobic exercises, have got the accompanying abs and scars. After a couple warm and spiced liquor drinks at our office Secret Santa exchange, one among them wowed us all with her muscle-strengthening “Pretty Girl Rock” floor routine. Last night, Keri did an equally interpretive, trombone popping version on Letterman. Sitting with Dave was probably a day highlight for Keri Baby, but not so much as the bump in with elusive mother-to-many Lauryn Hill she reported on twitter:

Snaps of how Lauryn and Beyonce have already done Keri’s retro look and Ms. Hilson with Ms. Hill yesterday (Lauryn looking good in menswear, smoke indigo eyes and a crop puff!) after the jump!