I FEEL YOUR PAIN! lol.
I am also letting my little Tatum's bangs grow out so that they will become part of her top knot and I HAVE to keep it clipped back or else my poor little girl wouldn't be able to see anything
Tatum's hair is EXTREMELY thick though, and the little clips I use work pretty good for the most part (unless she goes to scratch and pulls her hair out from the clip) - but you mentioned that your baby has very thin hair - and I can sort of relate to that because my mom's Yorkie Kenzi has very thin hair on the top of her head as well. She has to use the TEENY TINY clips for her because the bigger ones like I use for Tatum are too big and with Kenzi having such thin hair on top, the clips just slide right out. In Tatum's case though, she has so MUCH hair, and it is so thick that the tinier clips won't hold it all - meaning I can't get all of her hair to fit into such a tiny little clip cause there is just too much of it lol.
SO - in other words, you may have better luck with the tiny clips since your baby has thin hair.
Here are some pictures that I posted the other day of Tatum and you can see the kind of clips I'm talking about. Most of her hair is up in a ponytail, but you can see where her bangs are shorter and this is the part that I am letting grow out
