One of her biggest supporters included her BFF, 28-year-old Blac Chyna. The pregnant model was in the audience to support 32-year-old Rose -- sans her fiance Rob Kardashian -- flaunting her baby bump in a comfy gray ensemble.
"My dearest friend Blac Chyna came out to support me tonight, so … she was screaming too," Rose exclusively tells ET of her loud cheering section.
Although Chyna is clearly far along in her pregnancy by the looks of it, Rose says that her bestie is actually having the most comfortable pregnancy ever.
"She feels amazing!" Rose shares. "And she doesn’t feel her pregnancy at all ... which is so weird. No cravings, no morning sickness ... it's just, like, her stomach's getting bigger and it's like a regular day for her."
Chmerkovskiy also had babies on the brain, with his own fiance, fellow DWTS pro Peta Murgatroyd, pregnant with their first child together -- a baby boy. According to the 36-year-old dancer, Murgatroyd is also having a pretty enviable pregnancy.
"She hasn't had morning sickness at all and she’s just… same, same way," he tells ET. "She looks… she's like Peta, with just growing body parts."
Chmerkovskiy admits Murgatroyd will definitely have to be the disciplinarian when it comes to their son.
"I’m gonna be a softie and she's gonna be a b**ch, for sure," he jokes. "She's the bad cop, 100 percent in that family, just because she will have no choice. I'm already thinking about the spoils and everything."
The excited father-to-be is even looking forward to wearing a Baby Bjorn.
"I just want him to live right here [on his chest] until he's about seven years old," Chmerkovskiy sweetly says, "Until he's like, 'Dad, I don't wanna be here anymore.'"
Rose and Chmerkovskiy performed the foxtrot on Monday to singer Alessia Cara's "Here," and their chemistry definitely came through in the dance. The new Loveline host even earned herself a few celebrity fans, including co-host Erin Andrews and judge Julianne Hough.
"Girl power! You're hot," Andrews said about Rose.
"When you're dancing, you're beautiful and you're graceful," Hough also gushed.