need lean legs

[gymchick]

Hey all need some help on a leg workout...my personal trainer recently recommended that I do supersets for weight training as I have been taking spin classes Mon-Thursday @ 5:30am with minimal time to fit in weight training so she thought supersets would be the best solution as they would save time. However I tried supersets on my legs before and with lowering the reps and increasing the weight my thighs got bigger than they already were. Shouldn't I be doing more reps with minimal weight to lean out my legs?
I have been trying to get leaner legs for 8 weeks now with no results not even an inch and I've been taking at least 4 spin classes a week - please help?

Current weight training workout:
Mon/Wed - Upper Body
Chest Press - 1st set 10 reps, 2nd set 8 reps 3rd set 6 reps - 3 sets total
Lats - same as above
shoulder press - same as above
bicep curls - same as above
tricep rope pull down - same as above
back rows - same as above

Tue/Thurs
Leg extension - same reps as above
Leg Curls
Aductors
abductors
leg extension
calf raises
lunges on smith machine
plyo squats on smith machine

Current Diet:

Breakfast:

Protein Shake 7:30am
Oatmeal 1 cup -9:30 am

or Chobani Yogurt w/ Kashi cereal

Lunch:
Chicken w/veggies/sweet potato or brown rice

Snack:
Hummus w/pretzels or cottage cheese w/ rice cakes or yoplait light yogurt

Dinner
Chicken or Tuna w/veggies or salad with light dressing

Any help would be appreciated - I have been trying to lose 20lbs from my pregnancy 3 years ago with no luck yet I am currently 5"5 165lbs my goal is to be about 140lbs...what am i doing wrong?????

 

[Quad-smack]

I would decrease the volume or number of sets on your leg workouts. Choose 1 exercise for Quads/glutes (lunge or squat or leg press), 1 exercise for hams (lying leg curl or seated leg curl or romainian deadlifts), adductors (forget abductors - there is no such animal as outer-thigh) and 1 exercise for calves.
Fewer exercises = less time. Try keeping your repetitions in the 10-12 range for all sets.
You may also want to consider 1 leg workout per week.
Your diet looks pretty good - give it some time.
Do you know what your bodyfat % is?