Wood, a model with Assets and a nutritionist with Avoca has been dating the former London Wasps player for five years and he popped the question in Rome last summer.
The former ICA Bootcamp contestant (28) jetted out to her family home in Marbella two weeks ago to kick off celebrations and has been keeping followers up to date with all of her prep work on Snapchat.
The couple met in 2011 in Dublin when Matthews, from Oxford, was in town playing with Wasps against Leinster.
Before Will relocating to Dublin, Jodie moved to London to be closer to him and finish a Master's degree in Nutrition.
The couple celebrated their reception at the exclusive Finca La Concepción and are expected to continue celebrations over the coming days.
Also in attendance was Jodie's model friend Michele McGrath, whom she worked with as a hostess at Buck's Townhouse, and her former MMA player boyfriend Cathal Pendred.
Jodie was part of the Celtic Tiger model set, often pictured partying at Krystle nightclub and was an in demand photocall model. But she proved she's got brains and beauty as she also has a degree in Molecular and Cellular Biology from UCD.