The mother-of-one was snapped sporting a denim shirt dress by designer J.Crew, along with a grey cardigan and aviator sunglasses.
The former Suits actress left husband Prince Harry and son Archie Harrrison at home for the whirlwind two day trip.
The 38-year-old is believed to have flown commercial following backlash over her use of private jets.
A source told The Times: “It is a last-minute trip. Excited to support her friend, and then come back.”
Meanwhile another insider told the New York Post that the trip was part motivated by damage control following her highly publicised use of private jets.
“She’s coming after the scandal over people taking photos of her at Wimbledon this summer and will come with at least two police protection officers,” the source said, “but they won’t be able to stop gawkers from taking photos.”
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