With an emphasis on crisp pleating, sharp lines, and sculptural draping, architectural looks are all-important for 2011.

No trust fund needed for a budget-friendly gown that takes ruching to the next level. The taffeta mermaid dress has a pleated bodice with a twisted center detail and a lace-up back. A sweep train finishes the skirt; $339, Mori Lee by Madeline Gardner. Earrings and necklace, Alexis Bittar.