That looks like it was done in buttercream with a ruffle tip. But it can be done in fondant, it would just take a lot longer
Wow, I never have seen this tip you speak of. That must be one mamma jamma big tip. Do you know a number on it that I can look for?
I did a similar cake and used fondant. It did take a little while, that's why I only did a few. It wasn't that hard though. You can see it here ... http://cakecentral.com/modules.php?name=gallery&file=displayimage&pid=1550266
It looks like bottom ruffles done in BC but top soft pink looks fondant!