Victoria Beckham hard at work altering Eva Longoria's dress in Twitter photo

Nov. 20 (UPI) -- Victoria Beckham has barely cracked a smile since she became Posh Spice nearly two decades ago.

But the 39-year-old defied her severe and stuffy reputation on Monday with a Twitter photo in which she appears to be on her hands and knees altering friend Eva Longoria's dress, proving that she's not above a little seamstress work.

Fitting @EvaLongoria for her @GlobalGiftGala in London tomorrow night #globalgifters x vb pic.twitter.com/anzaUx9xFH

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— Victoria Beckham (@victoriabeckham) November 18, 2013

Longoria, 38, has been friends with the 39-year-old mother of four for years. The former Desperate Housewives star is also godmother to Victoria's daughter Harper.

Longoria told Lucky last year that she always wears Beckham's clothes.

"Her sheath dresses. They’re just so easy," she said.

“Victoria is so funny!” she added. “And I have such appreciation for her style.”