We all agree this is weird overall right? Apparently this is Delilah Belle Hamlin's mom's suit. Her mom is Lisa Rinna - who is an actress and model. A couple weeks ago she commented this when Delilah posted another set of pictures wearing the suit:
Now listen, there will be a ton of pictures here of Delilah, because I know what works in these blogs. I just gotta talk quick about posing in your parents bathing suits. Stop doing that. It's weird. This isn't the first time I saw it either. I don't care if I'm not a 'model' and I 'don't get it.' Just wear your own bathing suit, don't think it's asking for much. Sure she pulls it off. She's a smoke, pretty easy to pull off a bathing suit when you look like that. Pretty jealous of just writing '22' as a caption and getting 59,000 likes.
Anywho, happy 22nd birthday, hope your mom and dad get you a bathing suit: