An excert from here : Slacks implies pants of certain materials which are not part of a suit (jeans are not slacks, and you would not refer to the pair of trousers that came with a suit as slacks.) It is also more common to use slacks to refer to pants worn by women, while men would wear trousers.
1 Bride and family pay for arrangements for church (including huppah if a Jewish wedding ceremony) and reception, plus bouquets and corsages for bridesmaids and flower girls. 2  Groom and family pay for bride's bouquet and going-away corsage, boutonnieres for men, and corsages for mothers and grandmothers.
Old Rules: Wedding and reception expenses for a first marriage are traditionally the sole responsibility of the brideâs family. When paying, they get to determine the size and style of the wedding and reception. The groomâs family my offer to share in the cost of the reception, and the brideâs family may accept in order to accommodate a larger wedding. New Rules: Both families may divide the expenses as their budget allows, or each family can contribute a set amount to the total expenses.