If you prefer to buy rather than make, several retailers offer variations of this style: Serenity Granny Stitch Halter/Tube Top moncrochet.com Go to product viewer dialog for this item.
: Crochet in a continuous spiral or joined rounds of the "granny stitch" (clusters of three double crochets) to build the fabric upward from a foundation chain. Sophisticated Styling Tips To keep a crochet tube top looking modern and "mature": tube granny mature top