The actress's character Whitney Dean agrees to marry boyfriend Tyler Moon (Tony Discipline) when he proposes to her later this week.
Whitney is excited as she shares the engagement news with her friends, but as ever in Walford, viewers will have to wait and see whether the couple actually make it down the aisle in the long-run.
McGarty told Soaplife: "I'm praying it happens because I'd love a big, fat gypsy wedding. I'm Irish and I know [Gypsy Weddings dress designer] Thelma Madine. I can just imagine Tiffany in a big pink bridesmaid's dress. I so want to call Thelma and say, 'I need a dress'.
"I've done a few weddings since I've been here and they're great to film as we're all together and we have a laugh between takes."
The 21-year-old also backed Whitney and Tyler as a pairing built to last, dismissing concerns that they are too young for marriage.
McGarty explained: "He's 'The One' and she can imagine spending her life with him. She feels totally different to how she did with Fatboy, who was all wrong for her. Tyler gets Whitney.
"She thinks you have to grab what you can when it comes along. Tyler's so lovely to her and the idea of being a housewife and mum really appeals."
EastEnders continues tomorrow (January 31) at 7.30pm on BBC One.
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