TTC bridesmaid‼️HELP‼️

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My husband and I started TTC this cycle.

I’m going to be a bridesmaid in a wedding in September.

The bride just messaged me and said she needs sizes for the bridesmaid dresses by tomorrow as she’s ordering them custom and it takes 4 months.

I don’t know what to do!

If we do end up getting pregnant right away, I would be about 7 and a half months pregnant by the wedding.

Or it could take us a while and I might not even be pregnant by the wedding.

I don’t know what to tell her!

She knows we were planning on TTC soon and there might be a chance that I would be pregnant and she’s totally cool with that. But I don’t know what size to order or if there is even a maternity option!

Help!!