11/24/2014 09:35 EST | Updated 11/24/2014 09:59 EST

Selena Gomez's AMAs 2014 Dress Channels Morticia Addams

There's Jennifer Lopez's version of sexy and then there's Selena Gomez.

On Sunday night, Justin Bieber's ex walked the 2014 AMAs red carpet wearing a dress that would have hung comfortably in Morticia Addams' closet.

The 22-year-old "Come and Get It" singer sported a floor-sweeping black Armani Privé gown that covered her up from head to toe save for the open back, which added a bit of an edge to an otherwise ok dress.

For her hair and makeup, Selena opted for a sophisticated updo and subtle makeup to play up her gown's elegance.

The brunette beauty also performed her new single "The Heart Wants What It Wants" and appeared to be on the verge of tears near the end of the song, which was reportedly inspired by her famous Canadian ex. (Even bestie Taylor Swift was moved by her performance!)

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