To make your own, here's what you'll need:
A pair of flip-flops (I like the Old Navy ones)
Soft ribbon (about a yard for each sandal)
2 Lucite/acrylic flowers
2 antiqued brass flower finding
2 crystals (I used a links from crystal chain)
E-6000 Adhesive
Scissors
Continue wrapping the ribbon down the strap of the sandal adding small dots of glue periodically on the back. Once you reach the end of the strap, place a drop of glue at the base and wrap the ribbon snugly until it adheres. Trim any excess ribbon. Place a drop of glue on the back of the metal flower finding and place on top of the lucite/acrylic flower. Place a drop of glue on the back of the crystal and press on to the center of the flower. Allow the glue to dry completely before wearing.
Special note: The ribbon I used was a very soft and gorgeous hand-painted silk bias ribbon from Batchelder Silk found at http://www.batcheldersilk.com/index.phtml. The lucite/acrylic flowers are item FL157 and the antiqued brass flower finding is item FIN102 and can be found at https://www.thebeadingplace.com/.