Kristin Cavallari was all smiles at a video shoot Friday in Los Angeles.

See More Hot Pics

• PHOTOS: See More Levi Johnston Playgirl Pics!
• Robert Pattinson and Kristen Stewart Sneak Out for PDA at NYC Club
• Heidi Klum "Excited" About Walking Runway – Five Weeks After Baby!
• Cyrus Family "Deeply Saddened" by Death of Driver in Tour Bus Crash
• "Family Matter" Halts Filming of Courteney Cox's Cougar Town

• Critics Slam New Moon
• Write a Fashion Police Comment for Sandra Oh
• Martha Stewart Slams Rachael Ray
• PHOTO: See Heidi Klum's Post-Baby Body!
• Cyrus Family "Deeply Saddened" by Death of Driver in Tour Bus Crash