Princess Beatrice of York and Princess Eugenie of York Attend Day 10 of the US Open in NYC on September 9, 2015

Princess Beatrice of York attend Day 10 of the US Open in NYC on September 9, 2015

Princess Beatrice of York attend Day 10 of the US Open in NYC on September 9, 2015

Princess Eugenie of York attend Day 10 of the US Open in NYC on September 9, 2015

Princess Eugenie of York attend Day 10 of the US Open in NYC on September 9, 2015

Princess Eugenie of York attend Day 10 of the US Open in NYC on September 9, 2015

Princess Beatrice of York attend Day 10 of the US Open in NYC on September 9, 2015

Princess Eugenie of York attend Day 10 of the US Open in NYC on September 9, 2015

Princess Eugenie of York attend Day 10 of the US Open in NYC on September 9, 2015

(L-R) Princess Beatrice of York and Princess Eugenie of York attend Day 10 of the US Open in NYC on September 9, 2015

 (L-front) Princess Beatrice of York and Princess Eugenie of York (left-back) attend Day 10 of the US Open in NYC on September 9, 2015

 Princess Beatrice of York attend Day 10 of the US Open in NYC on September 9, 2015

 (L-R) Princess Beatrice of York and Princess Eugenie of York attend Day 10 of the US Open in NYC on September 9, 2015

 (L-R) Princess Beatrice of York and Princess Eugenie of York attend Day 10 of the US Open in NYC on September 9, 2015

 Princess Beatrice of York attend Day 10 of the US Open in NYC on September 9, 2015

(L) Princess Beatrice of York and Princess Eugenie of York (R) on Day Ten of the 2015 US Open at the USTA Billie Jean King National Tennis Center on September 9, 2015 in the Flushing neighborhood of the Queens borough of New York City.