Kim Kardashian and her sister Khloe enjoyed a luxurious trip to Las Vegas with their friends, where they received VIP treatment at a Usher concert. Kim looked stunning in a sheer black crop top and skirt that accentuated her curves. The group flew to Sin City in Kim's private jet, Kim Air. They watched Usher perform his hit songs, and he even serenaded Kimora Lee Simmons on stage. Kim has been studying law for years, and she recently passed California's baby bar exam after four attempts. She hopes to follow in her father's footsteps and become an attorney.