Kate and William Join Mexican Wave at Wimbledon

Royal wave

Britain's Catherine, Duchess of Cambridge takes part in a Mexican wave as Britain's Andy Murray plays Spain's Nicolas Almagro in their London 2012 Olympic Men's Singles Quarterfinal at Wimbledon in south London, on August 2, 2012. AFP PHOTO / CARL COURT (Photo credit should read CARL COURT/AFP/GettyImages) — CARL COURT / AFP / Getty Images

William and Kate entered fully into the Olympic spirit today, participating in a Mexican wave while seated in the Royal Box at Wimbledon, as they watched British player Andy Murray cruise to victory in the men's singles quarter finals against Nicolas Almagro of Spain today.

LONDON, ENGLAND - AUGUST 02: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend the match between Andy Murray of Great Britain and Nicolas Almagro of Spain in the Quarterfinal of Men's Singles Tennis on Day 6 of the London 2012 Olympic Games at Wimbledon on August 2, 2012 in London, England. (Photo by Clive Brunskill/Getty Images) — Clive Brunskill / Getty Images

Kate was seen crying after Murray was defeated in the Wimbledon final by Federer last month.

Kate was wearing a £515 Stella McCartney knee-length dress, last worn to an opening at the National Portrait Gallery.

The Mexican waves lapped around the bleachers between games.