Oh, hell no. As the bride I might not be the one to confront the friend but you can bet I'd be getting a sister, mother, aunt or someone to tell the friend that she was confused. It wasn't her wedding day but the couple's wedding day and if she wanted to use their wedding as a prop for her social media pages then she could pony up some money to pay for the event or else decide to take her photos at a different location or dismiss her employee for the day.