May I suggest engaging as many muscles of the thigh as possible. My client Mindy was pleased that her skinny jeans were no longer suffocating her thighs, smile. Start with some leg press or body weight squats with and overhead press, followed immediately by a marching hip press or Glute Bridge. Then the Hip adductors followed immediately by hip abductors. Next, Seated Leg lifts for the hip flexors: raise the leg straight up first for 5 reps (ensuring that the heel clears at least the arch of the foot resting on the floor) the lift the leg up and out away from the body at a 45 degree angle for 5 reps and then cross the lifting leg over the leg resting on the floor and then lift off the resting leg for 5 reps. Finally throw in a modified mountain climber which I call the floater or the Runner, smile.