Vanessa, 39, has been posting photos as she visited various European destinations with daughters Natalia, 18, Bianka, 4, and Capri, 2, throughout the week.
In a post shared on Friday, she shared side-by-side shots that showed a young Natalia and Gianna on the Italian island of Capri alongside a current shot of Bianka and Capri sitting on the same bench.
"Missing my baby girl, Gigi. My #2. Mambacita," she captioned the post.
Gianna had died at the age of 13 with Kobe Bryant and seven others in a tragic helicopter crash on January 26, 2020.
The helicopter's pilot Ara Zobayan, Kobe, Gigi, John Altobelli, Keri Altobelli, Alyssa Altobelli, Sarah Chester, Payton Chester and Christina Mauser were the people who died in the crash. All of them were on their way to a youth basketball game at Kobe's Mamba Academy in Thousand Oaks when the helicopter crashed into a mountain.
Vanessa shared her grief of losing her husband and daughter in an interview with "PEOPLE for the Women Changing the World" in March.
"I cannot say that I am strong every day. I cannot say that there are not days when I feel like I cannot survive to the next. This pain is unimaginable. You just have to get up and push forward. Lying in bed crying is not going to change the fact that my family will never be the same again. But getting out of bed and pushing forward is going to make the day better for my girls and for me. So that is what I do," she had said.