Pockets!

TV "I'm in my wedding dress. It doesn't have pockets. Who has pockets? Have you ever seen a bride with pockets? When I went to my fitting at Chez Alison, the one thing I forgot to say is give me pockets!" -- Donna Noble, "Doctor Who: The Runaway Bride

STOP EVERYTHING so one of my friends got married yesterday and she had POCKETS ON HER WEDDING DRESS which is just the best thing I have ever seen. pic.twitter.com/3A0PF3102V

— Esther Kezia Thorpe (@EstherKeziaT) September 2, 2018

This seems immensely practical, especially since it gives you somewhere to put your hands, keep some tissues, hand wipes or even a phone, which is what the Doctor's asking her about when she gives him this rant.