My daughter's daycare teachers told me it was time for shoes when she started pulling up and they recommended these.  The sole isn't slippery so she can keep her grip on hard surfaces, and the design of the leather upper keeps them on her feet, unlike a lot of other baby shoes.  My only complaint was that everyone thought it was a butterfly, not a firefly, but she got lots of compliments on how cute her shoes were!

The only drawback is that we live in wet and dreary Seattle, so the one time I put her on the ground as she was learning to walk, they soaked right through.  They were definitely worn out when she outgrew them, so don't count on being able to use them for the "next" child, or donate them.