The 31-year-old actress, nominated for 12 years a Slave, paired her on-trend deep-V gown with a gold and diamond headband designed by Fred Leighton.
"It's a blue that reminds me of Nairobi. So it brings me back home," Nyong'o Ryan Seacrest.
For the record, her headband already has its own Twitter account:
That was quick! -Team LN “@LupitasHeadband: Nice to meet you world. You're welcome.”— Lupita Nyong'o (@Lupita_Nyongo) March 3, 2014