The 40-year-old star opted for a beaded vintage Swee Lo dress, sliver clutch and black pointy-toed pumps to celebrate the occasion. Eye-catching stars, stripes and a few letters (that don't seem to spell out anything) gave Thandie a distinctive '80s look. But the '80s are back, right?
Either way, the London-based beauty looks great. We're especially loving Thandie's sleek ponytail and bright poppy-hued pout.