Looking super cool – and super cute – the tiny tot was pictured alongside her doting mum Billie and aunt Sam Faiers this week.
Sam posted the sweet snap to her YouGossip account and admitted she and Billie had been giggling non-stop over how serious little Nelly looks.
She wrote as her caption: "Literally Billie and I we're crying in laughter at this picture. Nelly was so serious in her pink tints. Love u noo noo, always making us smile xxx."
Billie and Sam were recently over in Marbella with Nelly celebrating Billie's engagement to long-time boyfriend Greg Shepherd.
Although the Minnies Boutique owner said yes to Greg during a romantic holiday earlier this year, she's only just celebrating the big moment with her nearest and dearest.
Billie and Greg welcomed Nelly, their first child together, in July.
Nelly has featured very briefly in TOWIE since her birth but Billie has promised viewers will see more of her in future episodes.
She told Mother & Baby magazine: "Greg and I did have the conversation whether or not to have Nelly on the show – but I felt like I owed it to my fans and to TOWIE.
"The show is reflective of my life and Nelly is a part of my life now. I'm not going to have Nelly on the show all of the time - I'd rather keep her scenes little rather than often because it's more special that way and she doesn't know any different."
TOWIE's brand new series is expected to kick off on new channel ITVBe next month, starting with a special episode filmed in Ibiza.
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