Prince William was spotted on his way into Westminster Abbey in London today. Pippa and Michael Middleton followed behind in another car as the group arrived for final wedding rehearsals. Kate, Pippa, and their mom, Carole, left their home in Berkshire earlier today and made their way into Central London, where Kate then headed to Clarence House. The bride-to-be was seen unloading boxes and a dress bag from her car before entering the palace through the visitors gate. She and her family are taking care of last-minute preparations before the big day, while Queen Elizabeth II was wrapping up her own royal duties in the afternoon. William and Kate's nuptials are less than two days away, and we'll be streaming the royal wedding live on PopSugar as it happens, so be sure to check back on Friday for all the coverage.