Damn Kaley, back at it again with the killer hairstyles. After breaking out the extensions for the summer, Kaley Cuoco chopped her strands into a collarbone-length lob to reprise her role as Penny on The Big Bang Theory. "Sending mad love and props to @faye.woods for bringing my cut and colour back to its 'Penny' roots," the star captioned her selfie just before heading out to film the show's 10th season. Off-screen, Cuoco gets pretty experimental with her look, previously going for a pixie cut, which she later dyed pink. Check out a few on-set photos of Kaley's new lob, and see even more celebrity hair makeovers in our gallery.