The reality stars all celebrated on Saturday night with their own parties across the country.
Love Island hunk Tom Clare gave an insight into his spooktacular night with some of his co-stars and pals.
The 24-year-old former footballer posed for a group shot as Sammy Root, Casey O’Gorman and Scott van-der-Sluis could all be seen at the bash.
Comedian Jack Whitehall had a very unique outfit and stylishly pulled off his best Wayne Lineker impression.
His girlfriend Roxy also impressed as she pulled off Jim Carry’s famous look from The Mask.
Meanwhile, some of this year’s MAFS stars dressed up for Kiss FM’s Haunted House Party.
Rozz Darlington was a playboy bunny while Nathanial Valentino gave his best impression of a possessed reality star.
Little Mix‘s Leigh-Anne also attended the event and showed off her spooky look on the red carpet.
Denise Van Outen left fans hot under the collar with her all black sexy costume.
The TV presenter wore a short dress featuring a plunging neckline and paired it with knee-high boots.
Strictly Come Dancing‘s spin-off host Janette Manrara shared adorable pictures of baby Lyra’s first Halloween.
Janette, 39, posed at her front door alongside Aljaž Škorjanec with the little one wearing a pumkpin-themed outfit.
Manchester had its very own Chucky thanks to Rhian Sugden who brought glamour to the twisted doll.
The actress had frizzy red hair for the look, as she told fans: “Hi, I’m Chucky, your friend till the end!”
Coronation Street star Helen Flanagan put on a busty display as she channelled her inner wonder woman.
Amelia Dimoldenberg dressed up as iconic children’s TV character Mr Bean – and even had her very own Teddy.
Funnyman Keith Lemon was unrecognisable as he donned a scary werewolf costume while attending a party at Gaucho Club.
Even Adele got involved in the fancy dress spirit as she rocked up as Morticia Addams for her concert.
And Geordie Shore’s Chloe Ferry transformed into the Little Mermaid on Saturday night, as she dyed her hair red to embrace the Disney character’s look.