Duchess Kate Middleton sports 6-year-old red suit for the 4th time

If you've ever felt guilty about recycling the same outfit for multiple events, maybe think twice.

The Duchess does it.

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Kate Middleton stepped out Monday for a children's mental health charity event in London, and her bright red ensemble looked rather familiar. That's because the royal mom of two has worn the Luisa Spagnoli suit three times before, starting in 2011.

See all four sightings below:

The suit got a break in 2012, 2013 and 2016, but it's otherwise been put to good use by the 35 year old. And while the fashionista opted for black boots in 2011, she paired the refined outfit with black pumps in 2014 -- and she recreated that same look Monday (though her hair was down in her signature 'do this time around).

Jury's out on the footwear she chose for the Queen's Christmas lunch in 2015.

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