Millie Bobby Brown’s real name leaves Noah Schnapp stumped

Millie Bobby Brown's real name has left her Stranger Things co-star Noah Schnapp well and truly stumped.

Now, despite the fact that the pair have starred together on the hit horror series for five seasons now since 2016, it seems Noah may not know Millie all that well, considering he didn't even know her full moniker!

Millie, 21, who stars as Eleven on Stranger Things, sat down with Noah, also 21, who plays Will Byers on the TV show, where the latter was asked by an interviewer: "What is Millie's full name?"

Speaking to VT, Noah didn't even try to hide his complete and utter cluelessness over the real answer - and it was quite the journey until he finally reached the correct name, with a little help from the British actress!

Noah Schnapp was left seriously baffled trying to guess Millie Bobby Brown's real name (Kate Green/Getty Images)

"Oh," Noah began before thinking and eventually jokingly coming up with the answer: "Millifer? I don't know!"

He then broke his co-star's name down into every possible variation of the words 'Millie Bonnie Bobby Brown Bonjiovi' as Millie answered 'yes' or 'no' depending on the placement of each moniker.

"Drop the Bobby," Millie confirmed, also instructing Noah to 'drop the Brown' too, adding: "It's just Millie Bonnie Bonjiovi!"

Finally getting in, Noah responded: "Oh, Millie Bonnie Bonjiovi!"

"That's it," she said, joking: "Millie Bon Bon!"

Fans couldn't help but share their reactions to the pair's back-and-forth exchange, with one Instagram user gushing: "Millie Bon Bon is perfection!"

"Millie had Millie BonBon locked and ready!" echoed a second while a third chimed in: "I love how her initials didn't change."

The Stranger Things star's real name is actually 'Millie Bonnie Bonjiovi' following her marriage to Jake Bongiovi last summer (Instagram/@milliebobbybrown)

A fourth agreed: "Her initial will always be MBB."

"Good thing that her last name is still with B!" echoed another.

And a final Instagram user questioned: "She didn’t keep her last name?"

It was previously revealed that she adopted her husband Jake Bongiovi's surname after they married in May of last year.

But prior to this, her birth name was Millie Bonnie Brown.

Yes, you read that right.

The star shared that Bobby is her father’s name, and she changed it for ‘sh*ts and giggles’, which then ended up becoming her acting name.

So, when she tied the knot with the 23-year-old model, she simply dropped 'Brown' and replaced it with 'Bongiovi' - hence why her full real name is now Millie Bonnie Bongiovi!

However, it's clear the Hollywood A-lister is still going by her original 'Millie Bobby Brown' moniker for now.