Here's a top that features two flattering features for petites--a V-neckline and vertical lines. This stretch knit t-shirt features draping around the neckline, and it's available in a wide range of both regular and petite sizes from Nordstrom (Buy Direct)
Sleeveless tees come in handy as layering pieces, and if you don't want a print design, this t-shirt comes in several solid colors, too.
Image Courtesy of Nordstrom