Chelsy Davy to Wear Exclusive Alberta Ferretti Frocks

April 28, 2011— -- On Friday, Chelsy Davy will be wearing not one but two dresses designed and tailored by Alberta Ferretti.

For the royal wedding ceremony, Ferretti's press office tells ABC News, "She will be wearing an aqua green bias reverse satin dress. This will be teamed with an aqua green faille silk jacket with a deep boat neck and a knot detail."

A less formal, more festive and fun dress has been designed for the evening party. Ferretti's press office describes the frock as "a one-shoulder midnight blue crepe satin gown with a cut-out detail in the back."

Chelsy, 25, is best known as Prince Harry's on-again off-again girlfriend since 2005. A lawyer by trade, Chelsy is also a member of the close-knit group of friends that orbit around the princes and will be gathering to celebrate the wedding in London Friday.