You can easily recreate Sienna's look with just a few key pieces. First is a red dress, and I found two options, both from Target. The first retails for $24.99 and the second is $29.99. Click on either photo to purchase.
Can't afford Sienna's Isabel Marant booties? Alloy's Trinity bootie retails for $42.90 and will give you a nearly identical look for a lot less. Click on the photo to view or purchase.
And finally, a mesh watch will complete the look and this one by Grenen retails for $47.50 (on sale). Click below to purchase!