Alright ladies, I know some of you have amazing taste and find some of the cutest outfits. We are doing family pictures next month and a smash cake session. So here's the challenge for you. DH is going to wear dark wash jeans with a grey polo, DD is going to wear the dress pictured below (Carter's), and I have no idea what to wear. I would prefer something that didn't show too much of my arms because I'm not a fan of them and most of my baby weight went there during pregnancy and hasn't gone away. I'm a plus size XL, XXL size 18 type of girl with a tight budget so keep that in mind. ($30-40 for the total look is my goal) The photos will be outdoor during the morning but mid August. I've also included a picture of the onesie purchased for her cake smash, I haven't decided if we will change into something else to somewhat match her second look because I don't know if we will be in any of the cake photos.
Re: help plan my outfit- family photos
What about jeans with a white or yellow t-shirt and a gray cardigan? Something like this? You could wear jeans you already have, and perhaps a top you have and get a cardi to match? Or use a cardi you have, and buy a top?

Or you could do a black/grey/white top with a yellow cardi like this one? https://oldnavy.gap.com/browse/product.do?cid=96018&vid=8&pid=649881062
Separates with accessories to tie it all together?
or maybe a gray dress if you are not dead set on what H is going to wear?
This is a maternity dress but it might work. Add a cardi.
https://www.target.com/p/liz-lange-for-target-maternity-sleeveless-knit-dress-gray-yellow/-/A-14565471#prodSlot=medium_1_1
Add a yellow cardi
https://www.target.com/p/mossimo-supply-co-women-s-plus-size-sleeveless-maxi-dress-assorted-colors/-/A-14374348#prodSlot=medium_1_37
I would do a wide belt with this dress and roll up the sleeves.
https://www.target.com/p/merona-women-s-twill-shirtdress-w-belt-assorted-colors/-/A-14369232#prodSlot=medium_1_39
Or in denim. Wear a big yellow bracelet and sleeves rolled up.
https://www.target.com/p/merona-women-s-plus-size-long-sleeve-denim-shirt-dress-blue/-/A-14360925#prodSlot=medium_2_31
Yellow, teal, and grey look great together. And bonus, teal and grey will also look great with the purple onesie.
https://www.target.com/p/mossimo-women-s-plus-size-kimono-maxi-dress-assorted-colors/-/A-14252747#prodSlot=medium_2_37
I'm going to stop now and just say, look at Target
This is my favorite.
https://www.target.com/p/merona-women-s-ponte-scoop-neck-dress-w-pockets-assorted-colors/-/A-14264405#prodSlot=medium_1_32
You ladies rock! Thanks for the suggestions. I'll look into your ideas.
Edited: I just ordered this. I'll either pair it with dark wash skinny jeans or medium wash bootcut (but darker than what's pictured). Either a white or grey tank and nude flats. Does it sound ok?