The 41 year old comedian was photographed in a fluffy couture ensemble inspired by the pickled onion-flavoured crisps.
She was seen leaving her Central London hotel with her husband Bobby, complete with a matching bag, bodysuit, and earrings.
The star previously made headlines in 2023 when she dressed as a Giant Wotsit; and this time was no different. The custom-made costume, measuring 130cm from toe-to-toe, caused some difficulty as the couple tried to squeeze it into the back of a black cab, much to the amazement of onlookers.
Now, she's keeping up the tradition with this show-stopping costume created by Walkers Snacks as it marks the comeback of the 'Scarily Giant Costumes' which launched last year and quickly sold out.
Wayne Newton from Walkers Snacks commented: "After the incredible reaction to Katherine's Giant Wotsit costume last year, she knew she wanted to take Halloween 2024 one step further. It's been a lot of fun making this bespoke outfit a reality and it's certainly one that's turned heads."
"This bespoke piece was created especially for Katherine but those who want to dress up like their favourite snack and embrace their inner big kid can also get involved, with the return of our giant inflatable Halloween costumes."
The limited-edition inflatable costumes are available in both 'Giant Wotsit' and 'Giant Monster Munch' styles, each coming with a sharing bag of the snack.