I love these BP Cardigans from Nordstrom. The fit and quality are so similar to the Jackie cardigan from J.Crew and the price is a lot cheaper. I found a few colors on sale at my local Nordstrom and quickly scooped them up.
Anthropologie Rose Tartan Tieback, similar here
Nordstrom BP. Classic Crewneck Cardigan
Anthropologie Pessinus Garden Necklace, similar here