How Best in Show-winning poodle let's her hair down at home

A poodle is on top of the dog show world.

Siba, a standard poodle, was crowned best in show on Tuesday at the 144th Westminster Kennel Club Dog Show.

It’s the fifth win ever for the standard poodle breed and the first since 1991. Siba was the winner Monday in the non-sporting breed category.

Siba, her handler Crystal Clas and Gail Miller Bisher, Westminster Kennel Club's spokeswoman, joined "Good Morning America" Wednesday to discuss more about their newly-crowned champion.

"She has effortless gate and it just shows her power and her beauty and her strength," Bisher said of Siba's moves in the ring. "I think the judge just couldn't deny her -- she really is a muscular, strong, athletic standard poodle."

What to Know About the Best in Show Winner

She only eats chicken. According to her handler, Siba is a big fan of chicken and nothing else, not even vegetables or turkey. On Monday night before the big show at Madison Square Garden, someone got Siba grilled chicken from a nearby McDonald's.

Siba is almost 4 years old. The black standard poodle will celebrate her birthday on March 8.

Getting glammed up takes 3 - 4 hours. Her handler said they dedicate a nearly four hour process before showtime to get her ring ready.

She "let's her hair down" at home. The perfectly coiffed black poufs for a big show turn into brushed out pigtails in her downtime. "At home you'd never know she's a show dog," Clas said. "She runs the field, plays with my two-year-old, she's just a hooligan."

King, a wire fox terrier, won the best in show award at last year's Westminster Kennel Club Dog Show. It was the 15th time its breed had won the top honor.

Siba is owned by Connie Unger and William Lee.

ABC News' Darren Reynolds contributed to this report.