Growing earnings and sales by double digits quarter after quarter is no easy feat, but Ulta Beauty (ULTA) is doing just that. The retailer has put up at least 19 straight periods of two-digit top- and bottom-line gains. It’s expected to extend this streak when it reports fiscal Q2 results Aug. 27. Earnings are slated to rise 19% from a year ago to $1.12 a share. Sales are expected at $869.33 million, up 18%.