Blazer: Victoria's Secret, old
Sweater: Wildfox Couture
Shoes: Zara, old
Bag: Vintage Louis Vuitton "Monceau"
Sunglasses: Ray Ban
This is probably as close to preppy as I'll ever get. The prints and colors (and umm sequins) may lean more towards "in da club" than country club, but the silhouette of this outfit would probably get Blair Warner's stamp of approval.