Socks & mittens help!

Steph

I’m looking for socks and mittens for my new born the other ones slip off the top 2 photos are the only ones that haven’t slipped off and fit perfect. Can anyone recommend where to get more like these? My friend got me the socks from target but I can’t find any that look similar. The 3rd picture is what are currently too big for her and they slip off. Help