ET caught up with the former Real Housewives of Beverly Hills star in Paris, France, on Wednesday, where she couldn't contain her excitement while patiently waiting to watch both of her daughters, Gigi, 21, and Bella, 20, walk in the 2016 Victoria's Secret Fashion Show.
"Last night she came back from rehearsals, she was great, and you know, it all depends," she said. "It depends on so many little things. But you know, I know that they've got this and I trust that they're going to do well."
This marked Gigi's second time walking in the runway show, and Bella's first.
"I'm probably going to cry, yeah. I'm feeling emotional already," Yolanda dished. "When I drove off and saw all the beautiful pink lines, I was like, 'Oh my God, this is such a huge deal and it's exciting."
The 52-year-old former model also revealed that this was a dream come true for her daughters, who "used to watch Victoria's Secret and practice in the living room with all their girlfriends."
"I cheered them on, and for me, it was something reachable," she said. "It was. I encouraged them to go for their dreams. I mean, I always knew that this is what they're going to do at some point in time. I never really knew it was going to happen today, this fast, early on in their careers. But I always set goals and I knew that this was going to happen."
Earlier in the day, Yolanda took to Instagram to share a sweet throwback pic of Gigi and Bella adorably posing together and rocking white angel wings.
"17 years after I photographed my 'ANGELS'," she captioned it. "Today is the day that they will be walking in the fashion show together......... #Excited #Grateful #Paris #VS #Sisters #ProudMommy."