My daughter currently has a B'TWIN 500 KIDS' 14-INCH BIKE UNICORN.
The only problem we have had with this bike is the road tyres that it came with. We often find ourselves on paths and tracks that aren't tarmacked, she has had several slips that I have put down to the tyres.
So now she is ready for the 16" I have been looking online and none of the girls bikes come with knobbly tyres? (is this sexist?)