Although the Duchess is supposed to be on maternity leave, Meghan made a surprise appearance at the Grand Slam in order to cheer on friend Serena Williams.
The new mum presumably left little Archie Harrison in the good company of dad Prince Harry, to enjoy her day at the tennis.
Prince Harry and Meghan Markle released a statement earlier this week announcing that they will keep Archie's christening - as well as the identity of Archie's godparents - private.
The move is slightly controversial as other prominent members of the royal family - like Kate Middleton and Prince William - have opened up the christening to the public rather than elect a private ceremony.