‘I know we’ve had our differences in the past but my heart is broken for you sis smh no one deserves to feel that pain especially during such a sensitive time,’ she posted on Instagram.
‘God bless you and your baby,’ she concluded, signing with a heart emoji.
While the 34-year-old didn’t specifically name anyone, there could be no doubt the message was directed at the heavily pregnant KUWTK star.
Earlier on Tuesday, her partner Tristan Thompson was reportedly seen kissing and groping a number of women in two separate videos published just days before Khloe was due to give birth to his child.
Lani Blair, who has been repeatedly named as the woman the NBA star smooched while he was at PH-D Lounge, follows Amber on Instagram. While Amber’s pal and Kardashian enemy Blac Chyna follows Lani on the picture sharing app.
Much of the reaction to the videos on social media mentioned ‘karma’, as Khloe herself was accused of starting her relationship with the NBA star while his previous partner, Jordan Craig, was also pregnant.
However one person not rubbing it in online was Craig herself, who declared she just wanted ‘peace for everyone’.
‘If you respect yourself and you respect others, you would never make light of the misfortune of anyone, nor would you feel indemnified when it comes at the expense of others,’ she shared on Instagram.
Amber and Khloe’s feud kicked off back in 2015 when the former criticized rapper Tyga — who shares a baby with Amber’s close pal Blac Chyna — for dating 17-year-old ‘baby’ Kylie Jenner, Khloe’s youngest half sister.
Amber — who once dated Khloe’s brother-in-law Kanye West for two years — previously called Kim a wh*re on Twitter and claimed OJ Simpson was Khloe’s real father.
Khloe meanwhile was last seen on Instagram on Monday, in a photo kissing Thompson, captioned: ‘We are ready whenever you are little mama.’