No, my wedding corrdinator told me yesterday that bridesmaid and groomsmen pay for their own clothing, and new couple prepare some gifts for them.
弱弱的问伴娘和伴郎的礼服也都要自己准备么？

Traditionally, there is the same number of bridesmaids and groomsmen.
传统上伴郎和伴娘的数量相等。

Freddie was Keith's best man and his friends Eric, Billy, and Andrew were the groomsmen.
弗雷迪是基斯的伴郎，他的朋友埃里克，比利，安德鲁是男傧相。