It's Essential Mock Neck Bodysuit

Basic-ally a must-have for any wardrobe! This bodysuit features a mock neckline, long sleeves, and a thong bottom with dual snap button closure. Composed of a ribbed knit fabric, this form-hugging piece offers plenty of stretch. 

Model is 5'9" with a 34" bust, 24" waist and 34.5" hips. She is wearing a size small.