Your mom went a bit overboard today.
Look at the smorgasbord of clothes you got.

I picked an assortment from 3 months to 12 months.
I'll have you know your mom got some great deals. Many of those outfits were marked down from $14.00 to $4.00. Remember to give your mom a hug when you learn to because that was super great deal!
Still, your mom is feeling very inexperienced especially after this trip. Although I made it a point to get various sizes from 3-12 months with seasons in mind, I'm feeling a bit silly for having to ask if you should be wearing onesies at 24 months.
I saw a 75% rack and beelined to a cute set of 4 onesies with strawberries on them. Of course, every item on the rack was sized 24 months. I was dying to ask a fellow shopper if a 24 month old should be still wearing a onesie but decided to avoid any embarrassment and shame for what sounds like a silly question.
I put them back figuring when it's time for you to wear size 24 months, they'll be cooler clothes out there on the sales rack.