Lupita Nyong'o hit the Oscars red carpet on Sunday and, once again, she completely stunned us with her look. The actress wore a pearl-covered, open-back gown by Calvin Klein Collection, which she accessorized with jeweled earrings and a laid-back hair and makeup look. Lupita was joined by her younger brother, Peter Jr, who famously took over last year's award season with his star-studded photo album and appearance in Ellen's epic selfie. Lupita will be hitting the stage to present an award during tonight's show; we can't wait to see that dress in motion! Keep reading to see photos of Lupita on the Oscars red Carpet, and be sure to check out more of the night's arrivals!