She also shared a snap of Starr rocking a trendy outfit consisting of matching pink trackies and a headband, along with a onesie that was gifted to her prior to her birth.
The heartwarming photos come following a video posted by Brynne's mother Mariel Gordon last month, in which Starr can be seen rocking gently in her swing.
Mariel, who also shared several snaps of Starr on her own page, looked every bit the doting grandma after meeting the tiny tot for the first time last month when she flew to Melbourne from her home in Arizona.
After welcoming her first child in April this year, Brynne spoke exclusively to New Idea, where she admitted her cherubic daughter had turned her once-bedazzled life upside down – and she wouldn’t have it any other way!
“I haven’t had a good night’s sleep since Starr arrived,” said Brynne with a laugh.
“But I wouldn’t trade being a mum for anything – I’m the happiest I’ve ever been,” she added.
Initially closing the door on parenthood a decade ago after being told she was unable to conceive, Brynne revealed she didn’t expect to take to mum life quite so easily.
“I didn’t think I had any maternal instinct,” Brynne explained. “Even while pregnant, I couldn’t quite believe it was happening, but as soon as she arrived, we bonded and it all felt very natural.”
While Starr may only be a few months old, Brynne can already see some of herself coming out in her little girl.
“I can tell she’s going to be very strong-willed,” Brynne said. “She’s always wriggling around and doesn’t want to be dressed in what I put her in,” she adds, smiling.
Brynne previously revealed Starr’s biological dad, who she prefers to keep anonymous, won’t be a part of her life, but he has already met her twice.
“I’m still not sure what role he will have, but we’ve met up and he took us out to dinner and [Starr and he] spent some time together, which was really nice.”
And while Brynne would still love to find her fairytale happily-ever-after ending, dating is firmly on the backburner for now.
“There is plenty of time for that later on. Right now my whole life is Starr – she’s my everything,” she said.