Should you tip a photographer?

Paige โ€ข ๐Ÿ‘จโ€๐Ÿ‘ฉโ€๐Ÿ‘งโ€๐Ÿ‘ฆ
I'm getting professional photos taken from a girl who does her own business in a home studio today, and I was wondering what the standard for tipping was. This will be my first time not going to just walmart or something, so I have no idea!