Starbucks says it will start selling a ‘Mini Frappuccino’ starting Monday through July 6. The new size is just 10 ounces, compared with 12 ounces for the company's ‘tall’ or small size. Starbucks isn't the only chain trying to tempt people with more modest serving sizes. Sonic offers ice cream shakes in a 'mini' size and recently ran a limited-time offer for mini hot dogs and mini fried chicken sandwiches. Coke has also been playing up its mini cans, which are 7.5 ounces, compared with 12 ounces for a regular can.