I'm getting my hair done for the wedding and want to offer my stylist's services to my BMs. They can choose to have their hair done by my stylist or their own, or do it themselves. I'm leaving it completely up to them, but if they choose to get it done I will not be paying for it. I'd like to ask them if they'd like my stylist to do their hair for the wedding, if they'd like, since she'll already be onsite to do mine.
How should I phrase this so they understand they'll be paying for their own hair if they choose to have it done by my stylist?
ETA: Words are hard.