The Spiral Boobs Sweater starts from the center and worked outwards making the front and back the exact same.
This can be made to any length.

Yarn
Stylecraft Special Dk, the model shown in pattern is done using Black 1002 and Purple 1855.

Sizes
Small - 34.6 inch chest
Medium - 40.9 inch chest
Large - 41.7 inch chest
Extra Large - 42.5 inch chest
2x Extra Large - 43.3 inch chest
3x Extra Large - 44.1 inch chest

Uses a 6mm hook.