Kegel exercise: The best part about this exercise is that you can do it anywhere and everywhere without the world even knowing about it. Slowly tighten your pelvic muscles under the bladder as hard as you can. Hold to the count of five, and then relax. Repeat for five minutes and do it every day.
Pelvic floor exercise: Tighten and release the pelvic floor muscles over and over. Be quick and do about 10 sets. Make sure that these exercises are only done with the pelvic floor muscles. Avoid tightening the abdomen, buttocks, back or thigh muscles.
Squats: Believe it or not, doing squats is a very good exercise for tightening the vagina. Stand with feet shoulder wide and keep the hips tucked in. Bend at the knees and lower down your body slowly. Add hand weights for a better result.
Leg raises: Lie on your back and raise each leg into the air. First go alternate legs each, then go both legs each time. Along with toning your leg muscles it will also tighten your muscles around the vagina.
Vaginal exercisers: There are several vaginal exercisers which can help in tightening of the vagina, like cones, barbells and even balls. Basically you insert the exercisers into your vaginal opening and tighten your muscles around it. Over time you switch to the heavier and smaller exercisers as your muscles get stronger.