Katie Holmes holds on tight to Suri in a cold NYC

Hilary Duff heading to a West Hollywood gym

Hilary Duff looking lovely in a striped top and red skinny jeans as she heads to meet her personal trainer at a West Hollywood gym.

Amanda Peet, husband David Benioff and baby Frances Pen catch a flight, LA

Lindsay Lohan and Samantha Ronson head to Fred Segal for some retail therapy

Stephen Dorff arriving at the Grand Opening of Lucky Strike Lane and Lounge held at Lucky Strike LA.

Lauren 'Lo' Bosworth and Lauren Conrad at the Grand Opening of Lucky Strike Lane and Lounge held at Lucky Strike LA

Devon Aoki arriving at the Grand Opening of Lucky Strike Lane and Lounge held at Lucky Strike LA

Amanda Bynes arriving at the Grand Opening of Lucky Strike Lane and Lounge held at Lucky Strike LA

Paris Hilton parties with Avril Lavigne at Villa Lounge

Russell Crowe plays with his son in the park

Paris Hilton arriving at the the Grand Opening of Lucky Strike at L.A. Live in Los Angeles, Ca

Christina Millian arriving at the the Grand Opening of Lucky Strike at L.A. Live in Los Angeles, Ca