Gold Logie award-winning television and radio presenter Carrie, 37, is expecting her third child.
The baby will be her second with longtime partner Chris Walker.
Fifi, who has a daughter Trixie with Grant Kenny, sported sensible flat shoes as she made her way to the celebration, clutching a large paper bag – presumably containing a gift or decorations.
Fifi wore a blue, patterned calf-length dress with a frill around the chest area for the occasion and accessorised with dark sunglasses, her mobile phone and a large born leather handbag.
Pregnant Carrie, meanwhile, dressed her blossoming baby bump in a bright floral dress which featured a stylish tie beneath the bust line.
She accessorised with dark glasses and a soft pink handbag which featured a chained shoulder strap.
A glimpse of Carrie’s delicious baby shower cake could be seen as the pals were spotted on the street.
The stylish cake was decorated with white icing and foliage.
After her baby shower, Carrie took to social media to share a heartfelt post about how her newborn baby may change things at home with her two other children.
"I am laying in bed at 6.30pm (gotta love maternity leave!) thinking about how their relationship might change a little when number 3 arrives," Carrie wrote.
"🤔 hope they stay super close."