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Practicing the royal wave, Kate Middleton and Prince William make their second public appearance.

Andrew Milligan / Pool via Reuters

Britain's Prince William and his fiancee Kate Middleton wave during a visit to St. Andrews University in Fife, Scotland on February 25, 2011. The couple made their second official visit together since announcing their engagement in November, to St. Andrews University to launch its 600th anniversary celebrations.

David Cheskin / Pool via AFP - Getty Images

Prince William's fiancee Kate Middleton greets members of the public during a visit to the University of St Andrews in Scotland on February 25, 2011. During the visit they viewed the surviving Papal Bull (the university's founding document), unveiled a plaque, and met a selection of the University's current staff and students to mark the start of the Anniversary. Prince William and Kate Middleton attended the university as students from 2001 to 2005 and began their romance there.

Carl de Souza / AFP - Getty Images

Kate Middleton is surrounded by media and security as she meets the public during a visit to the University of St. Andrews in Scotland on February 25, 2011.

I imagine its good to practice and get used to doing public appearances ahead of their big day. Full story on their visit. More on the royals from the Windsor Knot blog.