I first read this in Second Grade. I remember, vividly, trying to copy the cover art, freehand. I did well enough that I kept it. I didn't remember the story.
Jennifer Giraffe invites Dandelion to a tea and taffy party stating, "come as you are".
He planned a haircut, then because it was 'frizzy and fuzzy and completely unrulish" he decides to get a fashionable wave. He felt so good, he wanted to wear something "more elegant" than his sweater. He bought a jacket, cap, and cane. When he arrives, she doesn't recognize him. Later, once a downpour flattened his wave, and he lost, or laid his new clothes. He decides to return, a fresh bouquet of dandelions in hand, she now knows him.
He explains he was the dandy, then promises , to never try to be stylish again, "from now on I'll always be just plain me!"
As an adult, I can appreciate authenticity, yet, I fail to see why dressing up for an occasion is bad. That said, "come as you are" is the best thing a friend can say.