VIDEO : Kate Middleton Visits London's Victoria & Albert Museum Expansion

Kate Middleton put her art history degree to good use on Thursday, visiting the new expansion at London's Victoria & Albert Museum. Middleton participated in the official opening of the museum's Exhibition Road Quarter. This is the largest architectural project the museum has seen in over 100 years. Sporting a gray dress with red and black detailing, the Duchess of Cambridge walked around the new Sackler Courtyard, which is the first porcelain-tiled courtyard in the world. The 35-year-old royal unveiled a plaque in the courtyard to commemorate its opening.