Song of Songs is your answer . The chapter describes a beautiful woman. Thank the Lord everyday, that you're lovely as her, eyes, nose, lips, legs, its all there!. Just confess that you're beautiful like her. At the same time, believe it, and get rid of resentment and jealousy. When you see someone prettier than you, praise the Lord for his ability to create beauty instead of complaining to Him. Live your life right, and to pray for beauty, refer to Song of Songs. If you're a good person, and you have faith in Him, there is no reason why your prayers shouldn't be answered