at what week is good to get a 4D ultrasound?

The place I went to for my gender ultrasound said 30-32 for the cool picture ones.

tks @kandice_stedman86

I read 28 and up but the longer you wait the bigger the baby will be

my place told me 28 wks to about 33 any after that you might not get to see baby face cause they get so smushed in there

I got one a 31weeks, but they told me It might be too late for good pictures. But my baby is super small, so I got some good ones