Miley Cyrus and Mandy Jiroux checked I with fans on their YouTube channel, promoting the new bracelets they’ve teamed up with Jac Vanek on. They showed their two designs, one of which included their favorite “Doo Da Doo” phrase. The items are available at shopcyrusjiroux.com. They’ve had to beef up the web site’s server after the ‘Hannah Montana’ star directed her 1.8 million Twitter followers to the merch. Watch the update below.