This British site has some beautiful, unusual kids' stuff. These Japanese paper balloons would be perfect for Tessa's sea-creature birthday party in a few months. Bunches of them around the house would look really fun, and you could keep it to a yellow-and-blue color scheme:
|Balloons here; non-sea-creature animals are also available|
And this sweet, simple dress has butterfly sleeves and a great contrast of ivory and turquoise:
|"Popsicle dress" here|
No way would Charlie wear this T-shirt, but it'd be great on a younger, more style-malleable boy:
I'm not sure what this is (an apron? a sort of basic jumper you make yourself?)
|"Pinny kit" here|
but the colors and pattern (birds, turquoise, symmetry) are right on.