After using peaches second jump, I found out that when you press Y again, she'll do an aerial of your choice. This only works if you were holding the A button while holding the turnip. I don't know if this is new or not, but I thought I'd like to share.
Also for some reason it doesn't seem to work sometimes. I don't know why.
Also for some reason it doesn't seem to work sometimes. I don't know why.