aren't they just so funny at this age.
DD is a classic to take shopping because I'll pick something up and she literally rolls her eyes at me and says "that is horrible. you have no taste", then she will pick up a bright pink windcheater with a sparkly silver panda wearing a tutu and proclaim it the most gorgeous thing she's ever seen. Its gotten to the point that I make sure I can return anything i buy her in case she hates it.
And yes, I agree, it is about independence and letting her have a little bit of autonomy about some things in her life. She feels so proud of herself when she makes these decisions and I think that is a great thing to encourage.
My 4 y/o is heading down the same track, she wore a twirly party dress with a little bolero cardigan and socks and runners to kinder this week.