In one scene, the proud mum was seen cradling her gorgeous little one while at home with co-stars Ferne McCann and Gemma Collins.
Billie, 24, was a doting mum, staring lovingly at her daughter while catching up on the latest Essex gossip. It was also Billie's first time on the show since she gave birth.
"You know when people say there is no feeling like it?" she asked her friends. "There isn't! You can't explain it."
She added: "I can't believe I made her. She was in my tummy. When she's asleep, I'm looking over thinking, 'When are you going to wake up?' I want to give you a cuddle."
Ferne and Gemma were seen cooing over the baby, holding her tiny fingers and generally just looking pretty enthralled.
"I can't say nothing!" said Gemma. "I just can't believe she is here."
During the chat, Billie also confirmed that the baby was named Nellie. Aww.
Billie and her businessman fiance Greg Shepherd welcomed their first child together on 9 July. Billie was supported in the delivery room by both Greg and her younger sister, TOWIE co-star Sam.
And besotted aunt Sam was thrilled to see her cute niece on TV screens last night!
"There she is my little baby niece ... I love u xxxxxxxxxx," tweeted Sam. "Oh you're famous little niece .. Auntie is so proud of u xx."
Let's hope we see plenty more of Baby Faiers in coming episodes!
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Stars congratulate Billie on her baby!