Millie Bobby Brown's co-star channels Eleven in viral snap

Millie Bobby Brown has sent fans into a frenzy after sharing a behind-the-scenes glimpse of Enola Holmes 3,  but it wasn't the upcoming Netflix release that stole all the attention.

Ahead of the film's debut on Netflix tomorrow, the 22-year-old actress took to Instagram with a carousel of behind-the-scenes photos from the set. 

Keeping her caption short and sweet, she wrote: "Enola 3 tomorrow. Only on Netflix."

While the post featured plenty of fun moments from filming, eagle-eyed fans quickly became fixated on one particular image involving her co-star Louis Partridge.

In the snap, Louis appears to be playfully recreating one of Millie's most famous looks from Stranger Things. 

Sporting a nosebleed, the 23-year-old actor mimics Eleven's signature appearance whenever the superpowered heroine pushes her abilities to the limit.

Millie and Louis have become fan favourites since starring together in the Enola Holmes franchise, with viewers often praising their on-screen chemistry as Enola Holmes and Viscount Tewkesbury. 

Their playful behind-the-scenes interactions have only fuelled that affection over the years.

With the mystery movie arriving on Netflix tomorrow, anticipation is already at fever pitch. 

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