Giovanna, who is expecting her first child with Tom in March, looked radiant in a navy floral dress for the get-together.
The baby shower was organised by Giovanna's sister Giorgina with the help of their brother, TOWIE star Mario Falcone.
"Ahh… @giorginafalcone is throwing me a baby shower today," said Giovanna. "Very excited to see some lovely faces and get cuddles! Xxx."
She later added: "I've got a floral dress on and am waiting to be showered with babies. That's what happens at a baby shower...right? xxx."
Apart from opening presents, GIovanna also spent some time designing baby bibs and showed off her creation in a photo posted to Instagram.
But the best present of the day was Giovanna's incredible baby shower cake, which was designed in the shape of a baby changing bag filled with essentials like baby wipes, a bottle and baby powder - It looked too good to eat!
Sharing a photo of the cake on Twitter, Mario said: "Thank you to @symphonyinsugar for helping with my sisters baby shower cake!! Amazing!"
Tom stayed at the baby shower for a short while before heading out with Mario to watch a movie.
He later wrote: "Whilst the ladies were talking babies I saw Wolf Of Wall Street (the manliest movie ever) with @Mario_Falcone @Marios_Cafe & @mortgagelee."
Childhood sweethearts Tom and Giovanna announced that they were expecting their first child together in a sweet Halloween-themed video last year.
The happy couple have yet to reveal the sex of their unborn baby but Tom has been preparing himself for their new arrival by attending first aid classes and decorating the nursery.
The 28-year-old musician, who is preparing to go on the road with his McBusted bandmates in April for their first UK arena tour, tweeted last week: "Our baby's room gets painted today. Counting down the weeks now!"
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