How to Draw Dresses
To draw a basic dress, sketch the shape of the body that goes underneath it. Next, draw a small loop at the base of the neck like you were going to draw a shirt, then add the sleeves and continue with lines down to the waist. Once you pass the waist, swoop your lines out to make a flouncy skirt and bring the lines together to close the shape. Finally, add slightly curved lines going down the length of the dress to create folds or ripples in the cloth.
Look carefully at your girl. Make sure you are satisfied with her appearance before going in for the clothes. Draw a small loop at the base of her neck like you were going to draw a shirt.  Continue to draw a shirt.  Make your lines swoop out. Close them at the bottom. Add some slightly curved lines going down the dress to create folds or ripples in the cloth.  Start with the previous step one.  Follow the previous step two.  Now start at the top of the neck hole. Draw two half ovals sideways down it. Make long sleeves with frill on the ends.  Finish the bottom like the previous dress, but end it with frill like the sleeves.  Don't forget to add the ripples/folds.  Draw a V-Neck that goes down far.  You can add a U for an undershirt, but for maximum sexiness, just draw cleavage. (Hint: This is NOT a good dress for young girls.) Draw a curvy dress figure. If desired, you can make the dress have tank top sleeves. Draw the dress covering her feet.  Start from the line at the bottom and do a very slim triangle going up. This should stop just at the top of her thigh. Erase the bottom of the triangle. It's done! The triangle up the thigh and the low V-neck are what add that sexy element Finished. Be sure to decorate with any designs you would like. 
Look carefully at your girl. Draw a small loop at the base of her neck like you were going to draw a shirt. Continue to draw a shirt. Make your lines swoop out. Add some slightly curved lines going down the dress to create folds or ripples in the cloth. Start with the previous step one. Follow the previous step two. Now start at the top of the neck hole. Make long sleeves with frill on the ends. Finish the bottom like the previous dress, but end it with frill like the sleeves. Don't forget to add the ripples/folds. Draw a V-Neck that goes down far. You can add a U for an undershirt, but for maximum sexiness, just draw cleavage. Draw a curvy dress figure. Draw the dress covering her feet. Start from the line at the bottom and do a very slim triangle going up. Erase the bottom of the triangle. Finished. 