Looking striking in a simple Hobbs NW3 Wyldes dress, Princess Kate's striving sister watched Roger Federer play against Jo-Wilfried Tsonga on day nine of the Wimbledon Lawn Tennis Championships.

She and ex-cricketer Loudon appeared quite chummy as they sat in the stands near Pippa's mum and dad, Carole and Michael Middleton.

A party planner by day, Pippa knows how to keep us guessing as this is the first time she's been spotted with Loudon in weeks. She was recently snapped with her college friend George Percy, whose father is the Duke of Northumberland and one of the richest men in Britain.

Perhaps Loudon, who now is a stockbroker, is reconsidering all the attention that came his away after his girlfriend's derriere became famous after her sister's wedding in April. Connections always bolster the bottom line.