Cameron Diaz just gave Us the fall accessory blueprint while filming a movie! The actress was spotted on set, carrying a sleek crossbody that elevated her casual outfit. While her bag appears to be a $128 J.Crew pick, we tracked down a chic lookalike that rings in at just $20. During filming for Diaz's upcoming comedy Bad Day on September 29, she paired her bag with an olive-green coat, plaid button-up and classic jeans. The outfit was effortlessly cool, but it was the bag that really pulled it together.