It's Reiley Dilys Stella Willis

From http://www.catwalkqueen.tv/2010/11/stella_mccartne_54.html

Stella McCartney welcomes baby girl; launches new website

Update: Following our recent post, it has been confirmed that Stella McCartney and her husband Alasdhair Willis, have welcomed a baby girl, Reiley Dilys Stella Willis.

The designer gave birth to her fourth child on the evening of 23rd November. Reiley is the latest addition to the brood which also includes sons Miller, five, and Beckett, two, and a three-year-old daughter, Bailey.

Webmaster note:Reiley is an Irish name meaning courageous,Dilys is the name of Paul's aunt Dilys Mohin ,Mary's sister in law, who died earlier this year.