Giving us a good look at her growing tum, Sam pulled up her jumper to bare her stomach, while her niece Nelly, one, planted a kiss on her soon-to-be cousin.
Can you get any more adorable?
Sam is expecting her first child with boyfriend Paul Knightley and having had a sister who has been through a pregnancy herself not too long ago, we've no doubt she has been leaning on Billie for advice.
Catching up with her sister yesterday, Sam also got to spend some time with her cute niece Nelly and the tot seemed just fascinated with the former TOWIE star's baby bump.
Alongside her photo of the pair, Billie told fans: "Little lady kissing aunties bump @samanthafaiers1 she can't wait to meet her baby cousin."
Sam, meanwhile, commented on the snap, telling her sister Nelly and her unborn baby were "best friends already". Hearts officially melted.
Having experienced motherhood for herself, Billie is super excited for Sam now to be starting her own family. Shortly after Sam revealed she was pregnant back in August, Billie shared her congratulations on social media, telling Sam her life was about to begin.
She said: "Congratulations to my beautiful sister Sam and Paul. I can't explain my happiness and excitement for you both.
"We are going to have so much fun with our beautiful babies and Nelly Noo is going to have a cousin to play with. Eeeeeeekkkk. Very proud of you. Life is just about to begin sister!!! Love you so much."
Before becoming a mum herself, Sam has had plenty of practice with looking after a bubba, thanks to Nelly's arrival last year.
Revealing her little girl and Sam are already so close, Billie confessed earlier this year: "I like to think I'm Nelly's best friend but I think it's Sam really. They didn't see each other for two weeks recently and when Sam popped round, Nelly was laughing hysterically and kept laying her head on Sam's shoulder.
"They have a really close bond... [Sam] loves being an auntie."
Sam is currently six months pregnant and is due to give birth early next year. She and Paul began dating earlier this year, with the pair coming clean about their romance in April.
The pair were first linked in February, after being spotted kissing on a beach in Dubai. However, Sam recently revealed she and Paul have now been an item for a year.
Celebrating their first anniversary, the starlet paid a touching tribute to Paul, telling her beau he is going to make the "most wonderful daddy".
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