EXCLUSIVE: Kelly Rowland on Workouts With Beyonce and Jay Z: 'Everybody Goes Hard!'
EXCLUSIVE: Kelly Rowland Praises Pregnant Serena Williams, Talks…
Beyoncé Says Blue Ivy Used Negative Critiques to Improve Her Dan…
Taylor Swift Supports Beyonce at ‘Renaissance’ Film Premiere in …
'RHONJ's Jennifer Aydin on Where She Stands With Danielle Cabral…
'Black Panther' Stuntman Dies Along With 3 of His Children in Ha…
Maui Wildfires: A Look Inside How the Island Is Rebuilding
Watch Missy Elliott, Sheryl Crow and Chaka Khan Get Inducted Int…
Flavor Flav Delivers a Taylor Swift Surprise at Rock & Roll Hall…
'RHONJ's Margaret Josephs on Dynamics Drastically Changing in Se…
Chase Stokes Gives Update on Romance With Kelsea Ballerini (Excl…
Ashley Graham Shares Working Mom Advice on Juggling Three Kids (…
Sanya Richards-Ross on Expecting Baby No. 2 and Hopes for Anothe…
When Michael Strahan Is Expected to Return to 'GMA'
'RHONY's Jessel Taank on Being the Breakout Star of Season 14 an…
'Married at First Sight': Michael Shocks the Other Couples With …
‘Magnum P.I.’s Stephen Hill Shows Off His Surfing Skills With th…
Jeezy Addresses Divorce From Jeannie Mai and Why Therapy Couldn’…
Justin Timberlake's Famous Friends Defend Him After Britney Spea…
'The Waterboy' Turns 25: Adam Sandler Explains His Inspiration f…
Beyonce is taking her post-baby body seriously!
ET's Deidre Behar caught up with Kelly Rowland at the premiere of True and the Rainbow Kingdom in Los Angeles on Thursday, where she opened up about hitting the gym with Bey and JAY-Z after they welcomed their twins, Rumi and Sir Carter.
WATCH: Beyonce Hits the Gym With JAY-Z and Kelly Rowland -- See the Pic!
"Everybody goes hard!" Rowland said of their workouts. "It's a whole bunch of us who go and work out, and we have a really good time."
"We got to Angela Davis' SoulCycle. She's incredible. She pushes you. SoulCycle is just this really incredible, mental workout that is just awesome," she added. "But Angela Davis, she is the master. There's no one like her."
As for Bey and Jay's twins, Rowland said they're just as adorable as we imagine. "You couldn't expect anything less," she gushed.
The 36-year-old singer brought her own son, Titan, along to Thursday's premiere for a "mommy date."
EXCLUSIVE: Kelly Rowland Dishes on Parenting Advice She Got From Beyonce & Other Famous Moms
"I love being with my son. He's excited. I told him we were coming to see a movie. He loves the movies. He surprisingly sits down and is quiet in movies, which completely blows my mind," she said of her 2-year-old, adding that he's a "really interesting cross" between her and husband Tim Witherspoon's personalities. "He's both of us."
Rowland, who is "so excited" to be back in the studio recording new music and is "inspired by life," said Titan is taking after her in one area: "[He's] very musical."
Titan definitely has a good ear -- Rowland shared that he's already bilingual, and she's working on language No. 3!
"He is fluent in Spanish. I'd like for him to start French. My nephew actually speaks French. And we're looking forward to, hopefully, a Diego birthday party. A Diego-themed birthday party. We'll see what happens," she said of his upcoming third birthday in November, before gushing about her friend, Serena Williams and her soon-to-be baby.
"Hands down. She is going to be an amazing mother. I am so excited for her and motherhood," Rowland confessed. "It's natural for her and, this baby is going to probably run the world."
"It's more so the mental of all it, you know what I mean? It takes a hell of a woman to be with-child, and play and winning the Open. So, incredible," she marveled. "Incredible."
See pics from Williams' recent baby shower in the video below.
True and the Rainbow Kingdom is available exclusively on Netflix on Friday.