Gemma and her TOWIE co-stars landed back in the UK yesterday (2 October) after filming the two-part special and she has confirmed that it is definitely "the city of sin".
The bubbly star appeared on ITV1's Loose Women today and, along with viewers, saw the first preview clip of their antics in Vegas.
In the footage, Gemma is stood in a swimming pool chatting to the TOWIE lads while wearing a giant necklace with an eye on it.
She tells them: "After all the arguments last night, I feel there is evil around us. That's why I'm wearing the eye."
Gemma then told the Loose Women panel: "That's the first time I've seen that clip. It was absolutely amazing.
"I've never been to Vegas before and wouldn't have changed it for the world. It's definitely the city of sin - 100 per cent."
Referring to her BFF and co-star Bobby Norris, Gemma added: "For me and Bobby, we had lots of fun and we stayed out of the drama and arguments. So from us, you'll see lots of laughs.
"With me, I've sort of become the mother of the cast. They come to me with problems and ask me for advice."
Summarising The Only Way Is Vegas, Gemma concluded: "It's gonna be good!"
The Only Way Is Vegas, 10pm, Sunday 6 October.
Check out our favourite pictures of the cast in Vegas in our gallery here:
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