Pippa Middleton and Alex Loudon watch the tennis at Wimbledon on June 29

Perhaps they're still playing doubles together after all.

Pippa Middleton and Alex Loudon, who had reportedly split a few weeks ago, arrived at Wimbledon together on Wednesday to catch a little tennis on the tournament's second week.

Just as her older sister, the Duchess of Cambridge, did on Monday, Pippa turned heads at the All England Club – sporting a red dress, with her ex wearing a navy blazer and blue-and-white striped tie.

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They were all smiles as they watched a quarterfinal match between Roger Federer of Switzerland and Jo-Wilfried Tsonga of France.

Pippa, 27, and Loudon, 30, a former professional cricket player turned broker, attended the Royal Wedding together in April, but Pippa's newfound celebrity was said to put a strain on the couple.

Pippa has also been spending time with George Percy, a college friend, with whom she also caught a spot of tennis earlier this month.