The Myrtle was, uh, not well-received on GOMI, to say the least. Fortunately, StitchWench offered up this Vogue 8873 alternative, which has a zipper in the back (easily removed if using stretch fabrics) and ZOMG POCKETS.
Update: The original Vogue alternative, 8873, relies on the bias cut of drapey fabrics to achieve the cowl. An additional option noted by commenter Thanks for reviewing my box, Vogue 1351, also relies on a bias cut bodice.
For non-bias, the Kwik Sew originally posted is designed for knits, and commenter Jay suggested Vogue 1250.
(all amounts in USD)
Myrtle by Colette, $14 for PDF, $18 for paper
Vogue 8873 for bias, $5.99 (sale) on VoguePatterns.com, paper
Kwik Sew 4026 for knits, $6.99 (sale) on KwikSew.com, paper
Vogue 1351 for bias, $5.99 (sale) on VoguePatterns.com, paper
Vogue 1250 for knits, $5.99 (sale) on VoguePatterns.com, paper