In matching shades, Cyrus and her on-again beau arrive in L.A. Plus: Jen & Violet, Tori Spelling, George Clooney Kellan Lutz and more

SHOW PONY

30 Rock's Alec Baldwin is in the mood to horse around, hoofing it to the Late Show with David Letterman studios in New York on Tuesday to visit with a fellow guest – and her four-legged friends.