Not to offend anyone here, But I was recently in a wedding- traditionally I was told it is the brides family responsabilty to pay for the wedding- in this wedding, the brides mother was a widow, and didnt have alot of money, the brides maid, and maid of honor, each agreed to pay half of thier expenses.
since they were keeping the dresses, and shoes, this wasnt a problem.
as for the groom, and groomsmen- they each paid half of thier own tux rental.
as for anyones hair being done, if this was something that the bride specifically requested to be done, i would have been offended. and feel the bride should pay that.
but all expenses, and payments for, should have been agreed to up front.
just my 2 cents worth. hope it helps