Pippa Middleton turned heads when she arrived at Wimbledon.

Miss Middleton made headlines when she wore an eye-catching bridesmaid’s dress when her sister Kate married the Duke of Cambridge in April.

She wore a bright red linen above-the-knee dress.

She has been spotted wearing the Hobbs dress, an NW3 Wyldes Dress, before.

Miss Middleton arrived at Wimbledon with her boyfriend, former cricketer Alex Loudon, and her mother Carole.

Retailers were expected to do a brisk trade in the cap-sleeve dress after the Duchess’s younger sister was photographed in it.

Both Hobbs and John Lewis were selling the square-necked outfit for £89, down from £129.

It was widely expected that Miss Middleton would be a Royal Box guest at some point during Wimbledon fortnight.

She sat in “normal” seats – believed to be a guest of a club member.

In recent months there was speculation that Miss Middleton and Eton-educated Mr Loudon had split up.

The Duke’s sister-in-law loves her tennis and was a recent guest at Queen’s where she sat with former boyfriend George Perry.

Meanwhile, Prince Harry’s on-off girlfriend Chelsy Davy also visited the 125th Championships on Wednesday with a female friend.

Miss Davy watched world number two Novak Djokovic play 18-year-old Australian Bernard Tomic.