Theresa May’s red dress – when did she first wear it and how much did her Blenheim Palace outfit cost?

ALL eyes were on Blenheim Palace last night as Theresa May and Donald Trump arrived at the magnificent country house for a lavish dinner gala.

But eagle-eyed fashion fans noticed the Prime Minister's silk red dress is a fashion favourite of hers... here's everything you need to know about the politician's recycled gown.

What did Theresa May wear to dinner at Blenheim Palace?

Along with Melania Trump in her yellow couture gown, Theresa May opted for a sleeveless red silk dress (with her white diabetes monitoring patch on show) for the glamorous occasion.

The full-length dress has a slinky slit at the back, adding interest to otherwise conservative design... fashion pun intended.

Like the First Lady, the politician completed her evening outfit with matching red shoes and a glitzy statement bracelet.

Unsurprisingly, the Tory leader relied on her signature kitten heels to see her through the event.

When did Theresa May first wear the red dress?

Ever the savvy dresser, Theresa May has been known to recycle her favourite outfits.

And this full-length red silk dress is no different.

The Tory leader first wore this glamorous gown for the annual Lord Mayor's Banquet in 2016, shortly after she became Prime Minister.

Almost two years later, Theresa May recreated the exact look for the Blenheim Palace gala last night - only ditching the gold necklace.

How much did her outfit cost?

As the PM recycled her 2016 Lord Mayor's Banquet outfit, the red silk gown is long gone from the British high street.