The couple have called-off their engagement but the 'Total Bella' star was all smiles at the Nirvana Food & Wine's Rose Parte on Saturday.
Nikki, 34, ditched her massive 4.5 carats diamond ring for the event that Cena, 40, had bought for her from Tiffany's.
News of the split just three weeks before their wedding, shocked their fans.
But Nikki was putting on a brave face and was all smiles for the cameras as she was joined by her twin sister Brie.
The Bella twins attended the event at the Sanctuary Camelback Mountain Ranch Resort in Scottsdale, Arizona, to plug their wine Bella Radici.
Celebrity chef Todd English was also at the launch.
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