Meanwhile, Lois has borrowed from the museum a copy of the Star Sapphire costume, which happens to include the genuine sapphire of power.
Carol, sensing the presence of the sapphire, comes to the Galaxy Building and gains her gem, fully transforming her into Star Sapphire. She puts the sapphire around the Man of Steel's neck to enslave him and demand he kiss her boot.
Lois puts on the Star Sapphire copycat costume to confuse the Red and Blue Blur, issuing her own commands. When he flips over in the air, the necklace falls off.