Battle of the Hallo-Queens! Emily Ratajkowski, Kim Kardashian, Rihanna and Rita Ora lead the A-list pack as stars turn out in their sexiest Halloween costumes

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, the Daily Mail reports.

The reality television star, 38, slipped her curves into a seductive lace corset and fuzzy pink hat to mirror Pam's look at the 1999 MTV Video Music Awards for a Kardashian party. 

And Rihanna ensured that even among a host of fellow celebrities in costume that she would stand out on Halloween as she attended the Laylow party in London clad in a figure-hugging latex co-ord.

Heading into the Notting Hill bar, the 30-year-old singer had all eyes on her as she sauntered in alongside the likes of Rita. 

Singer Rita, 27, also sizzled in a skintight latex trousers that clung to her incredible curves and highlighted her enviably peachy derriere as she channelled Alexandra Medford in The Witches Of Eastwick.

Liam Payne, who has been seen getting cosy with Rita Ora in recent months, decided not to dress up for Halloween, opting for a black coat and printed trousers.

Model of the moment Adwoa Aboah ensured she would turn heads with her Trolls-esque ensemble of a mint green coat and wig, whilst she donned blue body paint and cobalt tights.  

Poppy Delevingne donned a floral kimono and teddy to channel Michelle Pfeiffer's Sukie from Witches of Eastwick. 

Dwayne Johnosn and Lauren Hashian

 

 

Mel B and Harry Madatyan

 

 

Kim Kardashian

 

 

Emily Ratajkowski

 

 

Chrissy Teigen, John Legend

 

 

Bella Haddid and The Weeknd

 

  

 

Beyonce and Jay Z

 

  

Heidi Klum with friend

 

 

Rihanna                                        Kate Moss                                    Rita Ora

 

  

 

Jessica Alba with daughter

 

 

Adriana Lima

 

 

Sofia Vergara with family

 

 

Kylie Jenner with daughter

 

 

 

 

Nicole Kidman and Keith Urban