Step sister makeover

As she stood in front of the mirror, you couldn't help but stare at her. Her normally drab and frumpy outfit was gone, replaced by a tight, lacy red dress that accentuated every curve on her body. Your heart raced as you watched her fingers slide through her newly straightened hair, her breath catching in the mirror as she admired her transformation. Without even turning around, you could feel the electricity in the room – it was as if the air was thick with desire. You knew this was your chance; all you had to do was make your move. You took a deep breath and crossed the room towards her, your body tingling with anticipation of what was to come. As you stood behind her, your hands slowly slid over her hips, pulling her close against you. She gasped softly as you let your hands roam up her sides and around to cup her breasts through the fabric of her shirt, feeling her nipples harden under your touch.