Kate Spade black dressy tank top Small/P

Kate Spade Dressy Tank Top. Size tag says S/P, but I am not sure if this is actually a petite cut. Please take note of all measurements and feel free to ask any questions. Black with white trim, Pleated flouncy waist, keyhole back with bow. Made in China: 50% cotton and percent 50% modal. Machine wash cold & tumble dry low. All measurements are approximate: Length: 24” Pit to pit: 16.5”