On Tuesday, Vanessa took to Instagram to share several beautiful photos of her eldest child in honor of the special occasion.
"Happy Birthday! Mommy and Daddy are so proud of the young lady that you are," Vanessa wrote. "You have displayed so much strength and grace throughout the most difficult year of our lives."
January 26 will mark the one-year anniversary of the tragic deaths of Kobe and 13-year-old Gianna Bryant in a helicopter crash. Vanessa noted that her eldest had stepped up amid her own grief to help their family get through its toughest times.
"Thank you for stepping in to help me with your little sisters. You’re such an incredible big sister and a beautiful role model to so many people," Vanessa continued. "Thank you for being kind, polite and gracious in everything that you do. You have no idea how happy and proud mommy and daddy are that you’re our daughter. We love you always and forever, forever and always. Happy 18th birthday to our first born, Natalia, our principessa!"