Black tie doesn't have to mean floor length, especially if you're on the shorter side. Don't be afraid of a hemline that sits below the knee it can still be completely black tie appropriate Reiss Tallie Orange ivory Tallie Empire line Printed Maxi Dress, 10 Missacc Royal Blue Mother Of The Bride Dresses A Line Sleeveless Elastic Satin Mother Of The Bride Dresses With Appliques Lace Knee length dressAll colour mixed silk (one size fits most)