Since arriving in New York this week, Pippa Middleton hit the beach, the clubs, and of course, the U.S. Open.
It's not the first time the Duchess of Cambridge's little sister has taken in a match. The enthusiastic tennis fan has frequently been spotted in the stands in London and Paris.
Here are some of Pippa's best courtside moments:
Pippa watches the men's quarter-final match between Roger Federer of Switzerland and Tomas Berdych of the Czech Republic at the U.S. Open in New York.
Pippa arrives at the gallery at the U.S. Open tennis tournament in New York.
Pippa sits with her sister, the Duchess of Cambridge, on Centre Court for the men's singles final tennis match between Roger Federer of Switzerland and Andy Murray of Britain at the Wimbledon tennis championships in London.
Pippa arrives on Centre Court before the women's singles tennis match between Serena Williams of the U.S. and Melinda Czink of Hungary at the Wimbledon tennis championships in London.
Pippa watches the men's singles tennis final between Jo-Wilfried Tsonga of France and Roger Federer of Switzerland at the ATP World Tour Finals at the O2 Arena in London.
Pippa leaves Centre Court after the semi-final match between Rafael Nadal of Spain and Andy Murray of Britain at the Wimbledon tennis championships in London.
Pippa and former English cricketer, Alex Loudon, sit on Centre Court at the Wimbledon tennis championships in London.
Pippa smiles before a rain break at the Queen's Club Championships in west London.
Pippa watches the match between Robin Soderling of Sweden and Gilles Simon of France during the French Open tennis tournament at the Roland Garros stadium in Paris.