She and her boyfriend Alexander Edwards announced on Instagram on Wednesday that they were expecting their first child together, reports eonline.com.
Rose also has a six-year-old son named Sebastian Taylor Thomaz with rapper Wiz Khalifa.
Rose and Edwards posted the same photograph online, which showed the 35-year-old smiling while getting an ultrasound. She wore a black cap over her bleach blonde hair as well as a rainbow dress.
"Edwards and I are super excited to announce that we have a sweet little baby boy on the way!" she captioned the picture. "P.S Sebastian is so happy to be a big brother!"
Rose received a number of congratulatory messages in her comments section. Singer Demi Lovato, for instance, wrote, "Congrats mama!"