Both polishes have a thicker formula and dry to a satin finish. When I purchased them, I thought Cashmere Sweater would be more pink/peach instead of orange. Since I've found that these polishes look very different in person, I think it's helpful to show a variety of swatches of a given polish. While I still love both of these polishes, Cashmere Sweater is definitely not the color I thought it would be.
On the NWP website Ugly Sweater Party is described as a vibrant pink polish filled with beautiful gold shimmer. Cashmere Sweater is described as a berry pink polish filled with gold shimmer. In my pictures, you can definitely see the gold shimmer in each polish, but Cashmere Sweater leans much more to a burnt orange shade.
Ugly Sweater Party is definitely my favorite of the two shades. I'm a sucker for pink polishes with gold shimmer, and USP fits the bill, and it definitely is NOT ugly! I will hopefully be back next week with the final NWP polish I purchased - My Favorite Sweater HDF. You have seen this one on the blog before here, here, and here. Have a great weekend!