Generally, the best time to capture your bump around 28-36 weeks. This also happens to be the time frame in which you feel comfortable enough to move around and pose for cute belly pictures before you’re a little too close to your delivery date. But there are no hard and fast rules here! If you’re really digging your belly size in your 7th or 8th month, snap your pictures then.
If you’re expecting twins, generally right around 24 weeks is when you will have a nice, round belly But again, totally up to you!