Khloé Kardashian has revealed the sex of her baby, and it's a...

Eek!

From the editors of PEOPLE

Words by Jen Juneau

Despite what the public have thought up until now, it'll be a baby girl for pregnant Khloé Kardashian and Tristan Thompson.

The reality star, who managed to hide her pregnancy for a fairly long time, revealed the news on Sunday's season finale of Keeping Up With The Kardashians.

Khloé's doctor told her sister, Kylie Jenner, (who welcomed her first child, Stormi Webster on 1st February), the sex of the baby and she delivered the happy news to Khloé, who was visiting San Francisco with Kim and Kourtney Kardashian.

'I really hope Kylie's lying,' she said on KUWTK, admitting she'd been hoping for a baby boy. But on Sunday, she clarified on Twitter that she's thrilled to become the mother to a little girl.

'God gives us what we need! His timing is never wrong! my hormones were IN RARE FORM for that news,' she wrote. 'I am now so excited my daughter will have forever best friends with Chicago and Stormi!! God is great!!! Thank you Lord for our princess.'

The star also hinted at what she will name her first child when asked if she would stick to the 'K' theme – adding that she was considering 'T', most likely a nod to baby daddy Tristan.

Earlier in the episode, Khloé told her sisters she was 'pretty much convinced' she was carrying a boy. 'I have such anxiety and nerves to find out what I'm having,' she told the camera.

Kylie, 20, also commissioned a gender reveal cake for the big moment.

Multiple sources confirmed to PEOPLE in late October – one month after the star's pregnancy news went public – that Khloé, 33, and Thompson were expecting.

The NBA star, 26, also has a 14-month-old son named Prince Olivier from a previous relationship.