“The Bachelor” alum Erica Rose Sanders ditched the roses for rosé this weekend — taking over TMZ’s Brunch Bus for a booze-fueled spin across L.A.

Erica — now a lawyer — was running the show, leading riders on a full-on brunch crawl — with DJ Coach West keeping the vibes high and the playlist hitting all the right notes.

Erica even slipped into lawyer mode in between partying — plugging The Rose Sanders Law Firm and dropping quick legal advice … telling passengers after a crash, swap info, snap pics, and call a lawyer before your insurance — and no fees unless they win. Noted!

First stop? Beaches WeHo — where things kicked off with a private drag show and lemon drop shots flowing immediately. Then it was Saddle Ranch — pink gummy shots on deck, plus riders going hard on the bottomless mimosas.