Yes, my oldest when she was 3. (She's 15 now.) She was in a commercial for a local toy store. She had a lot of fun, but since it was a toy store they just wanted her to play. She played dress up in the outfit of her choice and played with trains. No big deal at all.
When she was 5, I "auditioned" her (sent in photo and stats) to be in the Walmart circular. She got picked and I thought she would love it but she didn't. It was hours of hair, makeup, trying on clothes, staying still so clothes could be pinned, several photos, etc. We've never pursued anything like that ever again.
A real woman always has a clean house, an empty laundry basket, smells good, is well made-up, slim, healthy, eloquent, and perfectly well behaved...I suspect I am a man.