DSs stopped enlarging their flippers at about 16 with a size 13 each. DD hasn't gone up a size in probably 2 years and she's 13 now. Not size 13 but age 13 and shoe size 9.5.
Of course, since starting high school I've gone up half a shoe size and an inch and a half in height, so maybe it doesn't completely stop until you're in your late teens or so?
Then, as an adult, my feet finally spread one more half-size.
So, I'd say some time after puberty is when the feet really slow down or stop growing.
I feel for you. My dd dances. That means that whenever she needs new shoes, she also needs new ballet, tap and jazz shoes. $$$!
I have learned to buy sandles two pair at a time - one the size she is when purchased, and another pair the next whole size up. DD loves sandles and will wear them almost year-round (we live in a fairly warm area). This way, whether sandles are available at the stores or not, she has another pair ready to go when needed.
Ann-Marita. I deleted my usual signature due to, oh, wait, if I say why, that might give too much away.
I read somewhere that, like your ears and nose, your feet always grow as you age... although it is only a tiny bit every year. I think that about 16 girls feet are about what they will be and boys age 18... but I could be very wrong
She also dances, but she easily wears out ballet shoes after 3 or 4 months.
My feet grew half a size when I was pregnant, moving me from 9.5 to 10...
Single mom to Rain (1/93) , grad student, and world traveler
Unassisted birthing, atheist, poly, bi WOHM to 4 wonderful, smart homeschooling kids Wes (14) Seth (7) Pandora Moonlilly (2) and Nevermore Stargazer (11/2012) Married to awesome SAH DH.
student reiki practitioner and aspiring /