Alice + Olivia Tam Leather Box-Pleat Skirt, $396

Prince William Duke of Cambridge leaves King Edward VII Hospital in London, England on December 4, 2012 where Catherine Duchess of Cambridge has been admitted for morning sickness. (FameFlynet)

Prince William Duke of Cambridge leaves King Edward VII Hospital in London, England on December 4, 2012 where Catherine Duchess of Cambridge has been admitted for morning sickness. (SplashNews)

(Courtesy Topshop)

(Courtesy Topshop)

(Courtesy Topshop)

(Courtesy Topshop)

Alice + Olivia Tam Leather Box-Pleat Skirt, $396

Prince William Duke of Cambridge leaves King Edward VII Hospital in London, England on December 4, 2012 where Catherine Duchess of Cambridge has been admitted for morning sickness. (FameFlynet)

Prince William Duke of Cambridge leaves King Edward VII Hospital in London, England on December 4, 2012 where Catherine Duchess of Cambridge has been admitted for morning sickness. (SplashNews)

(Courtesy Topshop)

(Courtesy Topshop)

(Courtesy Topshop)

(Courtesy Topshop)