The Big Brother star's followers have been itching to see a photo of newborn Siera since her arrival two weeks ago and earlier today, Imogen finally showed off her new arrival on Instagram, as she was doted on by her big sister.
Aren't they adorable?
In her photo, Ariana, two, is pictured cuddling up to her baby sis, feeding her with a bottle. Little Siera, meanwhile, couldn't look cuter wrapped up in a blanket next to her.
Alongside her photo, Imogen posted several heart-eyed emojis and told fans: "big sis duties... #arianasiena #sieraaleira."
Her followers were quick to comment on her heart-warming photo. One user said: "Awww, wonderful picture xx." While another wrote: "She grew up overnight.So precious."
Imogen first welcomed daughter Siera on 20 November and announced her arrival by posting a sweet photo of her baby's teeny tiny hands. The 33-year-old gushed: "Welcome to the world baby girl. Siera Aleira Horsley. Born at 11.13am this morning - weighing 7LBS1. She's perfect."
Siera is Imogen's second child with her long-term partner Adam Horsley and since giving birth, Imogen and her beau have been settling into life as a family four - even if so far it has meant many sleepless nights.
Tweeting recently, a sleep-deprived Imogen told fans: "That's all I want is more than 4 hours sleep a night Siera was up from 1-5.30 and ariana woke at 4am! Just why?!"
She added: "When [you're] so tired if someone asks how you are....you will cry."
Still, those little faces have got to be worth it, right?
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