Elka Collective Sienna Tank Midi Dress (Oat Marle) Johnny Sins Net Worth 2020 Biography Age Height Career Adriana Chechik. Adding to our collection of refined basics, the Sienna Tank Dress is a timeless summer staple. Made of our signature organic cotton blend, this dress has a supple and soft handfeel with a super fine rib texture and stretch throughout. Sleeveless with a scoop neckline, the Sienna Tank Dress is cut to a maxi length with fitted silhouette. Soft organic cotton blend Super fine rib Scoop neckline Sleeveless Fitted Maxi length Stretch throughout Model wears a size 8 AU Model Measurements: Height: 174cm Waist: 61cm Hips: 89cm Bust: 79cm Fabric: 40% Modal 57% Organic Cotton 3% Elastane Cold hand wash with like colours, Do not dry clean