Is Stella McCartney turning back the years with a new fresh-faced look?

The fashion designer, 44, who is Sir Paul McCartney's second child, was hosting a Christmas party at her shop in London's Mayfair.

Her pal Suzy Menkes, who is the International Editor for fashion magazine Vogue, posted a snap online on her public Instagram feed with the comment: "Stella McCartney is ready to roll out her holiday windows at her London store."

A photo posted by Suzy Menkes (@suzymenkesvogue) on

Cruel observers were quick to pick up on Stella's new look, questioning if she has had any plastic surgery.

mamalonga wrote: "What's happened to her face."

Silvia_penny said: "She went to the wrong doctor!"

debkurtz posteD: "Cheek filler pumped in."

isabelcostaofficialI was the most harsh, writing: "I'm shocked! She looks like Chucky's sister! What happened to growing old gracefully ? Never expected this from Stella."

However, others leapt in to defend Stella.

stebandido said: "So Beautiful Stella" and silvia_golita added: "Come on guys, it's just the lightings."

Stella's Christmas party was a star studded affair with guests including Ronnie Wood, 68, and Dasha Zhukova, wife of Roman Abramovich.

However, the star turns were comedy duo Jennifer Saunders, 57, and Joanna Lumley, 69, who turned the lights on for her festive in-store display.

This article originally appeared in The Sun.