Kristin Cavallari, Miss Universe

Jennifer Cooper/E! Entertainment

What does Kristin Cavallari do to help prepare for her role as a co-judge at the 2014 Miss Universe pageant in Miami? Scarf down some delicious eats and enjoy some laughs with her new colleagues, of course.

The former Laguna Beach and The Hills cast member and wife of NFL star Jay Cutler, with whom she shares two children, had a balanced breakfast, chowed down on fish tacos and even sneaked in some chocolate at a rehearsal on Saturday. 28-year-old reality star had told E! News recently that she usually eats healthy food and is trying to "put on muscle" or order to bulk up her skinny frame.

She also had dinner with her fellow judges, who hung out with Miss Universe Organization owner Donald Trump.

Cavallari is one of 10 judges at this year's beauty pageant. The others are The Real Housewives of Beverly Hills star Lisa Vanderpump (who bought her adorable dog Giggy, of course), Washington Redskins wide receiver DeSean Jackson, Grammy-winning music producer and songwriter Emilio Estefan, Miami Marlins player Giancarlo Cruz-Michael Stanton, British TV host Louise Roe, world champion boxer Manny Pacquiao, Project Runway's Nina Garcia, pro skateboarder Rob Dyrdek and telenovela hunk William Levy.

This year's pageant will see 88 contestants from around the world competing for the crown. The competition airs live from Miami on NBC on Sunday at 8/7c

Check out 15 exclusive photos from Cavallari's 2014 Miss Universe diary below.

—Reporting by Jennifer Cooper

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