These vendors feature modest swimwear styles that are trendier and more youthful.
DiviineModesTee features very contemporary, stylish modest swimwear. This site has a neat, unique feature: you can choose from different tops, bottoms, and skirts, and watch as your swimsuit is "built" right there on the screen!
LimeRicki features some mighty cute modest "no fail" tankini swimsuits. They have a longer, form-fitting tankini top with a padded shelf bra for comfort and support, and coordinating hipster bottoms that have a two-inch band around the top.
Modbe
Modebe carries a selection of cute modest tankini styles, plus a nice selection
of modest bottoms. (A word of caution: some of the tankini tops are cut
such that they might show a lot of cleavage on a full-busted figure.)
Shadeclothing.com carries several modest swimsuits, plus a layering shirt you can wear underneath a swimsuit (for example, under a too-short tankini, or a too-low-cut suit).