in the summer i love light, bright whites (say that three times fast!) and creams. they can be worn together, if you're brave! i love the look with the blue shoes. when you wear tone-on-tone anything (especially light colors) make sure you use varied textures to keep the look interesting. same goes for decor. lots of patterns and different fabrics help it not look institutional.
(images, first to last, via olivia palermo, our barbie dreamhouse, how sweet eats, style me pretty, dorothy perkins)