7. SHOW MORE STYLES. Blue Lace Mother of the Bride Dresses. For a classic option that will look elegant for your son or daughter's big day, a designer blue lace mother of the bride or mother of the groom gown is an easy choice. La Femme's line of formal blue lace gowns come in a wide variety of styles ranging from floor length blue lace. The groom's biological mother started crying because the bride had not put together an intricate ceremony that she could participate in. This is despite being told in advance that the couple felt it was better to not have any speeches by family than to try and include everyone - the stepmother, biological mother, the bride's mom, and. Photo by Britt. 3. Don't: Forget to Tell Guests the Dress Code. Don't keep guests in the dark about what to wear. The appropriate rehearsal dinner attire will depend on the nature of the venue and cuisine. For example, if you're serving barbecue, throwing a white party sounds like a mess in the making.