First off, this is YOUR wedding and you can do whatever you want! Having said that, there are plenty of ways around making an uneven number of wedding party look balanced.
One example is with posing for portraits. In group walking photos with everyone clustered together, it really doesn’t matter how many girls and how many guys there are.
Even posed in a line, you can mix girls and guys to get a balanced look
Walking down the aisle, if there are more girls than guys, one guy can walk with a girl on each arm and vice versa
It’s also not unusual to have bridesmen and groomswomen.
The most important thing is that you have the wedding you want with the people you love most surrounding you.
