Demi Lovato at Jimmy Kimmel Live! in Hollywood 11/24/13

Heidi Klum keeps it super chic as she heads to a birthday party for her son Johan, 7, at K1 Speed Indoor Go Kart Racing on Saturday afternoon (November 23) in Long Beach, Calif.

Amber Anderson attends Isabella Blow Fashion Galore at Somerset House on November 19, 2013 in London, England.

Actress Anna Faris attends Variety Awards Studio Day 1 at the Leica Gallery and Store on November 20, 2013 in West Hollywood, California.

Giulia Siegel attends the green carpet arrivals for the Stuttgart Premiere of the musical 'Tarzan' at Stage Apollo Theater on November 21, 2013 in Stuttgart, Germany.