Taylor Momsen: Plaid Shirt Look
Taylor is wearing the Ashish Sequin Lumberjack Shirt which retails for £890 at Selfridges or Browns Fashion. Her necklace is the sacred heart necklace by Pamela Love, which you can buy at Net-A Porter for $230.
Of course her shirt is ridiculously priced, but you can find lots of similar shirts for much, much cheaper:
You can complete the look with these similar items: