Dubois floored Harper with a jab and left hook in the sixth round, then dominated the rest of the fight to win 98‑91, 98‑91 and 97‑92. The judges awarded her the WBC and WBO belts, extending her unbeaten record to 13‑1.
The bout, held at Olympia in London, marked the first UK show by Most Valuable Promotions and saw Harper suffer a cut after a head clash in the eighth. Despite the injury, the British champion fought on until the final bell.