First of all I'm not girly at all so really need help on what would look good. I'm doing engagement pictures at a zoo. I am plus size, my finace is not. He's wearing a white button down shirt with dark/black jeans. Definitely going for more of a looking nice, but semi casual vibe. I have a navy blue lacy kinda shirt that I bought and mainly need to know what kind of pants I should wear or if I should pick a different shirt. Would white pants be ok? Would it look good with his white shirt? I'm afraid I'll look too dark if I wear blue or black pants. Should I pick a white shirt instead with dark blue jeans? Sorry if this isn't the right place, hopefully you guys can help.

PS I dont have time to order anything online, but do have a torrid.