The service, which has been running in beta since November, currently features deals for items such as beauty treatments and adventure days, recommended by Garraway.
Speaking alongside Peter Briffett, UK managing director of group-buying service LivingSocial at the Social Media World Forum yesterday (29 March), Garraway revealed how the service would officially rollout in about four weeks' time, with an online and offline PR push and launch party.
Each celebrity will have their own portal on Goodypass.com, which will include video, photos and a blog, from where they recommend deals.
The celebrities will not have tried these deals in every case, however.
Garraway would not disclose the revenue model for the site or the names of the celebrities which have been signed-up, saying only "They are not exactly going to be likes of David Beckham".
Garraway, when asked if the online voucher market was becoming a crowded market place, said: "Having celebrities making recommendations gives us an edge because it creates a buzz around the products and creates trust."
Briffett said that the marketplace was still young.
He said: "There is still no dominant player in the market and everything is everything to play for."
The rise of social commerce sites is best illustrated by LivingSocial and Goodypass.com rival, Groupon, which last January raised nearly $1bn investment.