Lululemon Racerback Black Sports Bra No Padding 13" Across Size 4

Lululemon Racerback Black Sports Bra No Padding This Lululemon black racerback sports bra has a nice quality feeling fabric and a mesh back . Excellent condition, but I can't find a size tag anywhere. It measures 13 inches across which I think is a size 4. Please compare to your other Lululemon items to ensure fit. Thanks for looking!