Kylie Jenner's fans believe they have discovered the name of her first child, who was born on February 1.

Taking to Twitter in their droves, many people think she has been named Butterfly, after she dropped a series of big hints.

Not only are there butterflies in the baby's nursery, but Kylie, 20, and Travis, 25, have had matching butterfly tattoos done. He also has a song called Butterfly Effect.

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'She's called BUTTERFLY': Kylie Jenner's fans believe they have discovered her baby's name after the reality star dropped some SERIOUS hints during her pregnancy announcement video

Hint, hint: She posted this emoji on Twitter back in May as she left her fans guessing

Ringing the changes: Kylie also shared this ring picture on social media a few months ago, handily all in pink

Kylie also stepped out wearing a necklace which was embellished with the little critters, which she clutched tenderly with her hand.

She wore another gold necklace just above it, which spelled out the words: 'Baby Girl.'

And there was that selection of pink butterfly rings which she wore alongside a pink manicure.

They have an ink(l)ing: Kylie and her boyfriend Travis Scott have both had matching butterfly tattoos (left and right)

Pondering: Kylie's fans are wondering if she already decided on the name, despite the fact she has not released it yet

What's bugging you? Kylie has decorated her child's nursery with lots of colourful butterflies

Dropping hints? Kylie's necklace has also caught the eye of her fans

Moreover, eagle-eyed fans think the insect is an Easter egg in her 'To My Daughter' pregnancy announcement video, alluding to her choice of name.

The 11-minute clip was released on Sunday night, alongside a detailed post in which Kylie explained why she kept her pregnancy under wraps.

The reality star has long used Twitter to drop hints about her life, even letting slip that she was having a daughter after posting lots of pink things on Instagram.

Her fans said: 'If Kylie Jenner has called this kid butterfly I'll scream.'

'If Kylie Jenner names her bubs Butterfly...'

'Why do I think @KylieJenner @trvisXX baby is gonna be Called butterfly #Kyliejenner #CongratsKylie #babygirl #Baby.'

'I bet @KylieJenner is going to name he daughter Monarch as in Monarch butterfly.'

'Congratulations @Kylie a butterfly effect u are going to be a wonderful wonderful wonderful beautiful mommy.'

'I feel like @KylieJenner is going to name her baby Monarch. It's the name of a butterfly. And a leader or queen. Hmmm #kyliejennerpregnant.'

'Kylie jenner is going to name her kid butterfly or flutter by just watch or flutter by just watch.'

They're onto her: Social media was awash with comments about the name

'@KylieJenner so is her name butterfly? bea for short?'

'I feel like the name to kylie Jenner’s baby is gonna be butterfly the necklace had to of had some relevance.'

'I’m saying it right here. @KylieJenneris gonna name her baby either Mariposa, Vanessa, or Nessie.'

Butterfly is now the odds-on favourite, with Paddy Power saying the odds are now at 1/6.

Do they know? Some people even posted GIFs about their prediction

However, lots of her other fans think the name will be butterfly themed, with talk of Mariposa and Monarch also coming into question.

A spokesperson for Paddy Power said: 'Kylie seems to be dropping subtle hints about the name she and Travis have gone with.

'But with the Kardashians and Jenners sticking to their ‘K’ theme, don't be surprised if the baby was actually called Kbutterfly.'