From left: PVC pants $760, Bianca cotton blazer $655, Newton cotton-blend dress $555, Tear tiered cotton tank $185, Fountain jersey dress $350 . All Preen Line at Net-a-Porter.

Preen Line, the second more affordable collection from Preen design team Justin Thornton and Thea Bregazzi, has been a breakout success since its launch in spring 2008. For resort 2009 Net-a-Porter purchased exclusive Preen Line pieces—including a few items which were sold out within days of hitting the site. Here are five covetable pieces, including a pair of PVC pants and a tiered cotton tank, which are still available online.