Keira Knightley'The Pirates of the Caribbean' star Keira Knightley looked stunning as a bridesmaid at her brother's wedding on Sunday.

The Daily Mail is reporting that the actress wore an above-the-knee, V-neck purple dress which was tied up at the shoulders. Knightley teamed the dress with black heels and a simple hairstyle.

Knightley was with her family in Glasgow, Scotland to witness her brother Caleb marry his fiancée Kerry Nixon.

Some family members decided to wear traditional kilts in honor of their Scottish heritage. The actress' mother, Sharman, is from Scotland.

Knightley, 26, reportedly took her new boyfriend 'The Klaxons' co-vocalist and keyboard player James Righton as her guest to the special occasion.