bridesmaids— Lady Louise Windsor  the seven-year old daughter of the  Earl  and  Countess of Wessex , The Hon.  Margarita Armstrong-Jones  the eight-year old daughter of  Viscount  and  Viscountess Linley , Grace van Cutsem the three-year old daughter of the couple's friend Hugh van Cutsem, and Eliza Lopes the three-year old granddaughter