Emily Ratajkowski, Kim Kardashian, Rihanna and Rita Ora all ramped up the sex appeal as celebrities both sides of the Atlantic battled it out for the sexiest Halloween outfits on Wednesday night.
Leading the pack was US model and actress Emily, 27, who channelled Raquel Welch, 78, for her appearance on Jimmy Kimmel Live wearing a skimpy brown leather dress with huge cut-out details.
In a nod to the classic 1966 film One Million Years B.C., Emily, 27, wore a cleavage-enhancing faux animal skin bikini for the taping.
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