Jennifer Lopez Celebrates Twins' Birthday with Heartfelt IG Post

To say that Jennifer Lopez's twins, Max and Emme, are growing up fast feels like an understatement.

It seems like just yesterday when we saw these twins as preschoolers, yet today already marks their 15th birthday. To celebrate the occasion, the Hustlers actress, 53, shared a video tribute to her children on Instagram. And this time, their stepdad, Ben Affleck, is joining the fun.

Lopez wrote, "Happy birthday to my beautiful, brilliant coconuts. I am so proud of you both in every single way. You bring so much joy and happiness to my heart and soul. I love you beyond forever. HAPPY BIRTHDAY."

With Taylor Swift's song, "Fifteen," playing in the background, the heartfelt video features throwback footage and pics of the twins' most memorable moments with their mom. For instance, there's one behind-the-scenes clip of J.Lo practicing the Super Bowl performance with her daughter, and another of her cradling her son, Max. But the one part that caught our attention? The blended family pic, which shows the twins posing with Lopez and her husband, Affleck, at a special dinner.

While speaking with Vogue about co-parenting with the fellow actor, who shares three children with ex-wife, Jennifer Garner, J.Lo noted that it has been a positive experience, since they're both "learning about parenting from each other."

She said, "The transition is a process that needs to be handled with so much care. They have so many feelings. They’re teens. But it’s going really well so far."