Gauge notes:

22.5 st/ 36 rows = 4” with 5.0 mm (US 8) – for waist section, and top and side bands
22 st/ 32 rows = 4” with 5.5 mm (US 9) – for bust and bodice sections
20 st/ 28 rows = 4” with 7.0 mm (US 10 1/2) – for bottom borders and hip section

From the pattern:

This figure-flattering, close-fitting tank is shaped by knitting stretchy Esprit Print yarn with 3 different needle sizes. It features a novel, laced-on bodice, which allows it to be worn two ways – with body lacing worn at its sides, as shown above, or with the body lacing worn at center front and center back, as shown below.