Reese Witherspoon has been gifted a third leg… courtesy of Vanity Fair

Airbrushing and A-listers go hand in hand, right? You show up, you pose, and you get digitally enhanced. Job done.

But while the photoshopping process generally involves paring inches of a star's waist and thighs, the latest example is slightly off-course.

After posing for the cover of Vanity Fair, Reese Witherspoon and Oprah Winfrey realised they had been gifted some extra appendages.

And they weren't the only ones to notice either.

Taking to Twitter, members of the public questioned why Reese was sporting an extra leg on the cover and why Oprah was rocking an extra hand in a supposedly candid shot from the shoot.

"Im tryna figure out how many legs reese witherspoon’s got in here, it’s been bothering me for the last five minutes," wrote one Twitter user who actually got a response from the Big Little Lies star.

"Well…I guess everybody knows now…I have 3 legs. I hope you can still accept me for who I am and I will never apologize for snuggling @Oprah."

"If you get the opportunity, I highly recommend it," Reese added as the public began a search for other photoshop fails.

Responding to Reese, Oprah replied: "I accept your third leg. As I know you accept my third hand."

Ladies, that's how you do it