1 of 10
1. SHE'S SWEET
Whether it's calling contestants "baby" or admiring a singer's shoes, Lopez is quick to compliment the Idols when they're good – and let them down gently when they're bad.
2 of 10
2. SHE'S SUPER-STYLISH
Forget song choice, it's all about outfit choice! From leopard print to head scarves to this stunning one-sleeved sparkler, Lopez is always chic on Idol. Too bad she's mostly sitting behind the judges' panel.
3 of 10
3. SHE GIVES GOOD ADVICE
The job is to guide contestants and Lopez does it well, like when she praised Thia Megia for singing an uptempo song but still encouraged her to work harder. "It was great to see you let loose like that," Lopez said. "Always make sure you connect with your lyrics so you can bring even more."
4 of 10
4. SHE'S GORGEOUS
The hair! The makeup! The attitude! Lopez shined in New Jersey, Texas, California and, let's face it, every single audition stop. And now that the shows are live, her glam squad must be working overtime to keep the judge looking flawless.
5 of 10
6 of 10
6. SHE'S HAVING FUN
She dances in her seat to the music. She jokes with Ryan Seacrest, Steven Tyler and Randy Jackson. Basically, she's enjoying herself – and it shows. "I've been having a ball with it," Lopez told Seacrest on his radio show. "I love working with all you guys and it's just been a lot of fun."
7 of 10
8 of 10
8. SHE'S A (WORKING) MOM
It's a balancing act! And Lopez, who brought her twins, Max and Emme, 3, to the show recently, makes it looks easy. Her husband, Marc Anthony, is also often in the audience and even has acted as a mentor to the contestants.
9 of 10
9. SHE'S GOT HEART
It must be tough to go out on stage and make Idol happen when there's great tragedy unfolding a world away. But before a recent show, Lopez and her costars did their part by acknowledging the devastation in Japan and telling millions of viewers how to help.
10 of 10
10. SHE (SEEMS) TALLER THAN RYAN
It could be her big hair and the high heels but Lopez seems to tower over Idol's host and has more than filled Cowell's shoes as the show's biggest and brightest star.
Girls' Lena Dunham, EP Jenni Konner Defend Series Writer Amid 'Misreported' Sexual Assault Allegations
Ryan Seacrest Denies Misconduct Claims Brought Against Him By Former Stylist: 'I Dispute These Reckless Allegations'
Teen Mom 2's Kailyn Lowry Reveals She Has a Girlfriend: 'It More or Less Just Happened'
Teen Mom OG's Catelynn Lowell Baltierra Reveals She's Seeking 'Treatment' After Having Suicidal Thoughts
Project Runway Contestant Wendy Pepper Dies at 53