The Boho Style Flower Girl Dress or Birthday Maxi Dress by MB Boutique Canada. The Rihanna flower girl dress has a soft graceful A-line silhouette. Fitted embroidered bodice features an elegant square neckline, a scooped back, and ruffled wing sleeves. A hemline that is higher in the front is adorned with chic ruffles that complement the sophisticated bohemian look.