Undecided about Maternity Pictures

We have our newborn and family photos booked and originally, I don’t feel too inclined to do maternity photos. I think they’re beautiful but personally, I’m not super into it for myself (not just for finances but it’s also just not really my thing).

My sister keeps hassling me asking if I’m sure because she regrets having never done them. What are all of your thoughts? Will I regret it?