According to Royal Musings
The sun held out for the wedding of Archduke Imre of Austria and Kathleen Elizabeth Walker…There were Luxembourgs and other royals out in full force, all close relatives or friends. The bride…wore a traditional white gown with a train, a lace veil and a pearl headband…
Archduke Imre’s groomsmen were his two brothers, Archdukes Christoph and Alexander of Austria, his first cousin, Prince Felix of Luxembourg, and two friends, Guillaume Heck and Louis-Victor Douville de Franssu.
Also of interest: