Margaret Josephs knows how to kick off BravoCon with a bang — and a bump.

The “Real Housewives of New Jersey” star teamed up with her longtime friend and Soirée co-founder Lexi Barbuto last week to host a star-studded celebration in Las Vegas, marking the debut of their non-alcoholic mocktail on the menu at The Vista Lounge inside Caesars Palace.

The lively event, packed wall-to-wall with Bravolebrities, creators and fans of the duo’s chic beverage brand, served as an unofficial kickoff party for the Bravo-filled weekend.

The bash, thrown in partnership with Cameo, featured a glamorous activation from the celebrity-shoutout platform, a luxurious caviar bump bar and — naturally — endless pours of Soirée.

Guests could sip the crisp mocktail on its own or spike it with their spirit of cho

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