Credit: Samir Hussein/WireImage

It's in the bag! 

Chelsy Davy won't just have Prince Harry on her arm at Friday's royal wedding; she'll be carrying two custom-designed clutches by the late Princess Diana's best pal.

During the day, Davy, 25, will carry a tan, matte bag Marks has named the "Safari" clutch. Marks tells Us Weekly Davy showed her pictures of the dress she will be wearing -- an aqua green satin dress designed by Alberta Ferretti -- and commissioned the clutch to match.

For the reception at Buckingham Palace, Davy will change into a one-shoulder midnight blue crepe satin gown also designed by Ferretti. She'll also switch to her evening clutch--a silver, alligator "Oscar" clutch, also designed by Marks.

The designer tells Us: "I am deeply honored to have designed the accessories for Chelsy."

Commemorate Will & Kate’s big day with our Us Collectors Edition: Royal Wedding with all the photos, anecdotes and details of the wedding. Available for pre-order now and on sale May 6.