If you're going to copy someone, this is how to do it.
Valentino's Bow Clutch is classic with a fashion forward touch. Most girls would carry a metallic clutch but most would shy away from this particularly dramatic bow.
So, if you want to sell that design to the masses and make a lot of money off of someone else's idea, tone it down a bit. Make the bow a bit smaller, maybe a touch floppier so it's more subtle.
Offer it in a few more colors, stick to a simple silk instead of a statement metallic leather, and charge 90% less.