Christening shoes

[Nicb77]

My Son gets dedicated (a type of Christening) in a few weeks time. I've got him a lovely navy and white outfit, but I'm struggling to find him a pair of shoes that he can physically try on, before buying. I'm after some navy leather t-bar shoes (it is on his 1st birthday, so proper walking shoes, and at present he's a size 31/2G.)

Does anybody know of any Special occasion shops that would have something like this to try on. I've tried all the usual clarkes, debenhams, Marks and Sparks etc.

Thanks.