About Hello Kitty by OPI Collection- In 2016, two icons partnered to create one unforgettable collection, the Hello Kitty Collection by OPI. The collection became an instant favourite –the most talked about OPI collection with the most searched for shade ever, Let’s Be Friends! Due to huge demand, these two icons are bringing back this beloved cotton candy pink nail polish and saying, Let’s Be Friends! again ! A star is born and the rest is pink glitter history with this nail polish.