LeBron James, 36, threw his wife Savannah a surprise 35th birthday party on August 27 — and she looked seriously stunning! The mom-of-three stepped out in a backless black dress with an ultra-sexy thigh-high split up her left leg. She paired the dress with glittering drop earrings, towering black stilettos and a black purse, as she swept her highlighted tresses to one side in glamorous curls.