Toddler shoe size!??

Can any mamas with maybe more than one child tell me how fast toddlers shoe size changes??

My daughter just turned 2 and shoe size 6.5 is just perfect. She does have some size 7 that do fit but she just has a little wiggle room in the front.

We are going to Disney in September and I found the CUTEST pair of sneakers online for our trip. But they only go by whole sizes so either 7 or 8. They are on the pricey side so I want to make sure they will fit!

Do you think a size 7 would be okay? Or should I play it safe and go size 8? She’s my first so I have no idea about toddler shoe sizes lol.

I know this is a silly/ dumb question but my husband isn’t helpful when asked for advice 😂😂