Kate Middleton, Prince Harry Rehearse the Wedding

Kate Middleton, Prince Harry Rehearse the Wedding
Prince Harry and Kate Middleton

04/15/2011 AT 10:50 AM EDT

Practice will make perfect come April 29.

With precisely two weeks left until the royal wedding, Palace sources tell PEOPLE Kate Middleton and her soon-to-be brother-in-law Prince Harry paid a visit to Westminster Abbey on Friday for a wedding rehearsal.

 Bridesmaids and pageboys joined Middleton, 29, and Harry, 26, for the partial run-through. Noticeably absent: Prince William, who was on duty at his Royal Air Force base in Anglesey, Wales.

With both William and the princess-to-be feeling pre-wedding jitters, this run-through is one of several rehearsals planned before the big day. Next up: Middleton's sister and bridesmaid Pippa, 27, will likely join some of the wedding party for a run-through at the Royal Mews, where the horses and carriages are kept.

 Also gearing up for the big day by putting in prep time Thursday: the Household Cavalry, who will be on-guard for the ceremony.

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