If you are into baking blogs at all, I'm sure you know this cake is all the rage now a days. Just do a google search for "ruffle cake" and many cakes just like this one will pop up. I just had to try my hand at it though because It's just so dang pretty!
As far as I know, this was a Martha Stewart design and it can be found at her site here. Other blogs I have seen this on were i am baker and at sweetapolita.com and all over the Sweet & Saucy Shop blog. You can even see a youtube tutorial from the Sweet & Saucy Shop here.
If you are a baker you should try this out, it's simple and girly. I made this one for a bridal shower. In case you can't tell, the thing on top is a little candle in the shape of a pink and purple castle. I found it at the kids party section of Target but I thought, brides want to feel like a princess on their special day, don't they?