OPI Nail Lacquer Let's Be Friends 0.5 oz In 2016, two icons partnered to create one unforgettable collection, the Hello Kitty Collection by OPI. The collection became an instant favorite the most talked about OPI collection with the most searched for shade ever, Lets Be Friends! Due to huge demand, these two icons are bringing back this beloved cotton candy pink nail polish and saying, Lets Be Friends! again!