Prom Night Orgasm

Vivian spent hours on hair, makeup, and dressing for the prom. Her mother said, "That dress is too sexy," but Vivian persisted. Her mother thought, The boy is nice, and my girl has a good reputation.  
 
How could her mother know that the prom would lead to a private house party and an available bedroom. When the clock chimed eleven, she thought back to her younger years and mistakes she’d made. I shouldn't have let her wear that dress, she thought.  
 
At that very moment, Vivian’s body arched involuntarily as her first ever orgasm shot through her naïve frame.