Wednesday would have been Gigi's 18th birthday, and her mother shared a special message for her on Instagram. "Happy birthday to my gorgeous girl, Gigi!," Vanessa Bryant said on Wednesday.

However, it's natural for your brain to glitch when it's time to put your undying adoration for your other half into a succinct caption/card message/IG story text. And that's why I compiled this list, ...

Happy 18th Birthday Dannielynn ... he said in the Aug. 26 message. Sarah Michelle Gellar Celebrates Husband Freddie Prinze Jr.’s 49th Birthday: ‘So Glad I Get to Grow Old with You' Selena ...

Tori Spelling and estranged husband Dean McDermott shared heartwarming birthday tributes to their 18-year-old son Liam ...

In commemoration, the R&B singer wrote a message on her Instagram Stories ... Today, he's the big 18! Happy birthday (Kiyan)!! We are so proud of you, and we love you so much!" ...