The blonde model and reality TV star gave birth to her first child with fiancé Pasquale Rotella four months ago and she is clearly settling into life as a new mum and is enjoying every second with her tiny tot.
This week, Holly - who got engaged in Las Vegas last month - couldn't resist uploading some snaps of Rainbow trying out a new baby gadget in the bathroom and also relaxing on her very first holiday to Electric Forest in Rothbury, Michigan.
Sharing her personal pictures with fans on her blog, Holly admitted that Rainbow had been an "angel" during their break in the forest.
She added: "We went to Electric Forest in Rothbury Michigan last weekend, staying in a cabin out in the woods. We had fun of course going to the festival but also roasting marshmallows, visiting the petting zoo and just hanging out in the hammock in front of the cabin."
As well as various photos of the popular Electric Forest Festival, there was a candid snap of Holly cuddling up to Rainbow and Pasquale and even a super cute closeup of Rainbow wearing a funky green hat. Aww!
On Tuesday (2 July), 33-year-old Holly uploaded another blog post that included a sweet photo of her daughter wearing a yellow outfit - complete with pretty pink socks - and sat in a fancy baby seat.
She wrote: "I love having a little swing or seat for baby Rainbow in my bathroom. This one is a MamaRoo seat that plays music, and has a little mobile for her to look at. She's quite intrigued by this feature, as you can tell by the contemplative look on her face. It lets her feel comfy and close to mum while I am doing my hair and makeup or taking a shower."
We can't get enough of baby Rainbow!
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