The boutique owner, 24, became a "proud auntie" this week when TOWIE star Billie gave birth to a baby girl.
And now, Billie's fiancé Greg Shepherd has publicly thanked Sam for her involvement in the birth.
Greg took to Twitter on Friday night (11 July) and wrote: "Thank you @SamanthaFaiers for being there for the whole labour you should be a very proud aunty xx."
And Sam quickly responded with the message: "Was the most amazing time ever love u all night xx."
Reveal broke the news that Billie had given birth to her daughter - her first child - on Thursday and Billie later confirmed the good news with a tweet saying: "We are so excited to announce the birth of our beautiful baby girl.
"We are so happy and the proudest mummy and daddy in the world!"
Sam also wrote: "Am the proudest auntie in the whole world my baby niece is perfect. Congratulations @BillieFaiers & @Gregshepherd_!"
She has since shared more cute messages about her new niece.
The day after, Sam gushed: "Cuddles with the baby are the best .. Could sit with her for hours.
"So amazing to have 5 generations In our family now.. We have a great great nanny xxxxxxx."
Billie and Greg have not yet announced the name of their baby girl or shared a picture of the new arrival. We can't wait to hear more!
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See the celebrity couples who have welcomed babies so far in 2014:
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