The pregnant reality star thanked fans for their support on Instagram on Wednesday night (2 September), by sharing a new selfie in which she's showing off a lot of cleavage.
Her caption read: "45 million Instagram followers!!!!! I love you guys!
Kim, 34, then followed up with two very similar selfies, which appear to have been taken in a car. Judging from her outfit, she took them on the way home from the Kardashian Jenner apps preview party at Nobu Malibu this week.
In August, the Keeping Up With The Kardashians star surpassed Beyonce to become the most followed celebrity on Instagram, although Bey is catching up with 44.6 million!
Kim used to hold the record for most liked Instagram picture of all time, thanks to a romantic image from her May 2014 wedding to Kanye West that garnered nearly 2.5 million likes.
Then little sister Kendall Jenner, 19, came along this year and beat that record with an Instagram picture of her own, showing her lying on the floor with her hair arranged in love heart shapes.
All you need to know about Kim Kardashian:
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