LONDON -- Most eyes will be on Kate Middleton's bridal gown as she weds Prince William on Friday -- but Chelsy Davy, the girlfriend of the groom's brother Prince Harry, will snag some of the fashion-watchers' attention by wearing two designer dresses over the course of the day.

Davy will be dressed in two creations by Italian designer Alberta Ferrett, the designer's rep confirmed to

The 25-year-old Zimbabwe-born blond will wear an aqua green bias reverse satin short dress with a faille silk jacket of the same color to the ceremony in Westminster Abbey.

She will then change into a one-shoulder midnight blue crepe satin gown with a cutout detail on the back for the evening party.

Prince Charles' wife Camilla, will wear a dress by Anna Valentine for the wedding.

The designer of the wedding gown is rumored to be Sarah Burton, creative director of the Alexander McQueen label.

Burton was reportedly photographed entering Middleton's hotel early Thursday -- making a bid to avoid being spotted by wearing a fur trapper hat over her head.