RUNS TIGHT & SMALL. I ORDERED SZ S FITS TIGHT ON MY ARMS & CHEST & COLLAR PART LOOKS FUNNY LIKE WEARING A KIDS T-SHIRT .I’M 4’11 120 LBS, CHEST 36 C . SINCE THE CHEST PART FIT TIGHT ,MED WOULD HAVE BEEN PERFECT AS FAR AS FIT BUT I LIKE THE CROP LOOK ON THIS SO SINCE I LOVE TO WEAR MY TSHIRTS SEXY I CUT OFF THE COLLAR & MADE IT OFF SHOULDER & IT HEL PED LOOSEN UP THE TIGHT FITTING ON MY GIRLS . SO EASY FIX FN NOVA NEED TO DO IT THIS WAY SO IF U GALS DECIDE TO PURCHASE THIS I HIGHLY RECOMMEND CUTTING THE NECKLINE LOOKS SEXIER OFF SHOULDER .