I need help please!

Okay so my mom is getting married in August and I will be 24 weeks at that time. I ordered a dress, cause I'm in the wedding and it was a little big now, but I'm afraid it will be too small when the wedding comes around. I'm just curious about your baby bumps at 24 weeks. If you could post pictures just to give me an idea of how big I might be that would be so great. I just need to know if I should call and change the size before it's too late. I'm 15 weeks now and barely showing. I'm a pretty small person skinny, but thick(if that makes sense) I have a lot of muscle, and short. 5'2. But 9 weeks is a lot of time for baby to grow lol