It looks like a tip 104.
It's the same as this technique but piped around the cake one row at at time, starting at the bottom and working up. Some of the ribbon's have sagged down in the photo but that just adds more texture and beauty to the cake.
Hope that helps.
Those look like Maggie Austin Cakes -style fondant ruffles to me. She has a Craftsy class where she demonstrates how she does it.
I just want to say thank you to all, sorry I have not been on in a long time and the gal went with a different look! Love this site love all the help!