Rhea Raj knows her sister Lara Raj can run it, run it, run it.
As the older sibling, however, the "Devil in a Dress" singer will always have some words of wisdom for the KATSEYE band member—even as the girl group continues its meteoric rise to fame.
"My advice to her is always to be bold, be your most authentic self," Rhea told E! News in an exclusive interview at the Diwali celebration at Maxwell Social on Oct. 3. "She's very fiery. Even though she's my little sister, she inspires me so much."
The solo artist emphasized, "I just never, ever want her to feel like she has to change herself in any way for anyone or anything."
Luckily, since the 25-year-old is also a musician, she and Lara—who is joined by Yoochae, Manon Bannerman, Daniela Avanzini, Megan Skiendiel and Sophia Laforteza in KATSEYE—are able to spend a lot of time together.
"It's iconic," Rhea gushed. "It's honestly so surreal that we get to share so many moments together. We were both together at Lollapalooza and then at the VMAs."
"We have such a deep respect and love for each other," she continued. "We want to be able to just hold on tight on this journey and be together because we're just best friends."
With both Lara, 19, and Rhea taking center stage in front of thousands of fans, the "Killer" singer reveals what advice she's given to her little sister and taken for herself from the experience.
"You have to live in the moment, which is so important with everything in life, because it goes by really, really fast," she emphasized. "You have to actually be present, just take a breath and enjoy. This is supposed to be fun. Being an artist is fun."
But she knows that there's a lot of hard work to be done, too. For KATSEYE, it began during the talent competition series The Debut: Dream Academy, which the six women won in November 2023.
Since capturing the hearts of their beloved fanbase, affectionately nicknamed Eyekons, the girl group has proven its worth in gold. After all, along with dazzling during their 2025 MTV VMA Awards pre-show onstage performance, they accepted the award for Push Performance of the Year.
"This is so crazy," Lara said during their acceptance speech at the UBS Arena last month. "This is all very new to us. This is our first time ever doing this. We've been through a lot together. So, having this moment feels so rewarding and feels like everything has paid off and fuels us to keep going."
Now, for some of the gnarliest boy bands and girl groups of all time, keep reading.
Backstreet Boys
Backstreet's back, alright! The Backstreet Boys released their first album in 1996, and redefined the turn of the century with 1999 record Millennium. Thankfully, Nick Carter, Howie Dorough, AJ McLean, Brian Littrell and Kevin Richardson are still touring and belting our favorite hits over two decades later.
Destiny's Child
All hail the girl group that gave us Beyoncé! Don't "Bug a Boo" when it comes to Destiny's Child because Kelly Rowland and Michelle Williams are still icons in their own right to this day as well.
'NSYNC
Justin Timberlake, Joey Fatone, Lance Bass, JC Chasez and Chris Kirkpatrick made up the iconic boy band group, 'NSYNC. We're still holding out for another reunion performance, and we promise, no strings attached because we aren't ready to say "Bye, Bye, Bye" just yet.
Spice Girls
If you wanna be their lover, you've gotta get with their friends...and they sure have a lot! The Spice Girls rocked the U.K. with their '90s fashion and catchy lyrics. Mel C, Victoria Beckham, Mel B, Geri Halliwell and Emma Bunton were the Brit girl group of our dreams.
Hanson
Far out, man. The Hanson brothers joined the ranks of fellow '90s boy bands with hit song, "MMMBop." Hanson released an album together in 2013 before brothers Isaac Hanson, Taylor Hanson and Zac Hanson went their separate ways for solo careers—and in Taylor's case, raising seven kids! Thankfully, our favorite bros reunited in 2018 for album String Theory and have continued touring since then.
TLC
BTS
Since 2017, Korean boy band BTS has been writing, producing and performing most of their songs as international superstars. The K-pop groups loyal Army of fans are some of the most passionate in music history.
B*Witched
For nearly four years, Keavy Lynch, Edele Lynch, Sinéad O’Carroll, and Lindsay Armaou were all over the airwaves with 1998 breakout hits like "C'est La Vie" and "Blame it on the Weatherman"—songs featured in everything from Smart House to Dawson's Creek. But in 2002, they parted ways after two albums... that is until reforming for 2013's The Big Reunion. And reunite they did as they've continued touring and even releasing new music, like EP Ripped Jeans in 2024.
98 Degrees
Yep, Nick Lachey was in a boy band and we're burning up way past 98 Degrees just thinking about it. Joined by Drew Lachey and Justin Jeffre, music producers Lachey and Jeff Timmons formed the group after leaving college to pursue music careers in the '90s.
New Kids On the Block
New Kids On the Block skyrocketed to fame in the late 1980s and the group reunited in 2011 for a throwback tour with The Backstreet Boys.
Original NKOTB members were brothers Jordan and Jonathan Knight, Joey McIntyre, Donnie Wahlberg and Danny Wood. The group broke up in 1994 but then reunited several years later and went on tour with the Backstreet Boys in 2011. Not surprisingly, that tour announcement pretty much broke the Internet. They are still performing today.
The Jonas Brothers
Thank god the JoBros are back! The Jonas Brothers gave us Nick Jonas' sweet smile, Joe Jonas' swagger and Kevin Jonas' big brother charisma. Oh, did we mention they can all sing and play instruments too? Excuse us while we're still swooning over these A-listers since their band debuted in 2006.
One Direction
One of the best bands to ever come out of a singing competition series, One Direction took over the planet in the 2010s. And, the boy band has birthed plenty of successful solo careers, with Zayn Malik, Louis Tomlinson, Niall Horan, Harry Styles and the late Liam Payne all solidifying their place in music (and fashion and film) history.
Little Mix
The X Factor-formed group are princesses of pop and sing about body positivity, feminism, the pressures of social media and juggling it all as young moms.
BLACKPINK
Lisa, Rosé, Jennie and Jisoo make up K-pop group BLACKPINK, who released their first album—aptly titled, THE ALBUM—in October 2020. "BLACKPINK is—we kind of felt like there's two colors that represented us the most ‘cause we're very girly but at the same time we're very savage too," Rosé explained on Jimmy Kimmel Live at the time. "We have a song called ‘Pretty Savage' and it kind of goes with ‘black pink' and so we thought it described us the best."
Fifth Harmony
Before the world experienced "Work From Home" life due to the coronavirus pandemic, Fifth Harmony gave fans an upbeat (and sexy) anthem to any WFH woes. Breakout singer Camila Cabello went on to have a successful solo career—including even playing Cinderella!—after the girl group went on hiatus in 2018 and other members have also released solo projects.
Five Seconds of Summer
Australian rockers 5 Seconds of Summer first started on YouTube before singles "She Looks So Perfect" and "Girls Talk Boys" got radio play. Eventually 5SOS opened on tour for One Direction, and the rest is history.
Boyz II Men
Still performing as a trio, Boyz II Men's Nathan Morris, Shawn Stockman and Wanya Morris have been rocking the charts with hits like "I'll Make Love to You" and "One Sweet Day" for over 30 years.
The Wanted
The bad boy counterpart to One Direction, U.K.-based The Wanted hit it big stateside with 2012 banger "Glad You Came," before starring in their own E! reality series, The Wanted Life. The group went on hiatus in 2014 before reuniting in 2021, but sadly, founding member Tom Parker died of brain cancer the following year.
CNCO
Big Time Rush
From Nickelodeon to national tours, Big Time Rush rocked hard for five years before parting ways in 2014. Good thing all four members—Kendall Schmidt, Logan Henderson, Carlos PenaVega and James Maslow—reunited for two new shows in Dec. 2021.
Girls Aloud
British pop group Girls Aloud made history as one of the first bands formed from a reality competition series. The year was 2002, the show was Popstars: The Rivals and the powerhouse vocalists were Sarah Harding, Cheryl (then known as Cheryl Cole), Nadine Coyle, Nicola Roberts and Kimberley Walsh. Girls Aloud recorded 20 consecutive top 10 singles and four number ones, including "Sound of the Underground," during their reign.