Wedding fever for Keira! Knightley plays bridesmaid at her brother's ceremony

By Daily Mail ReporterStep to it: Actress Keira Knightley helps his eldest brother, Kaleb, celebrate his wedding to web designer Kerry Nixon at the Pollokshields Burgh Hall in GlasgowLess than a week before the Royal wedding, Keira Knightley got into the spirit by playing bridesmaid at her brother’s ceremony today.The actress arrived at the venue in Glasgow to witness Caleb, 32, marry his