Jennifer Lopez has celebrated another trip around the sun, as she rang in her 51st birthday with loved ones. But the two-time Grammy nominee appears to have found a fountain of youth, as she continues to stun at every age. 

She showed off her gorgeous figure Saturday, as she took to Instagram with a mirror selfie in black activewear, after celebrating her birthday on Friday.The 51-year-old wrote: 'Just finished a great post-birthday celebration workout and helped to support hunger awareness!'She was also celebrated by fiancé Alex Rodriguez, 44, who took to his Instagram Story with a sweet photo, writing: 'My queen.'

'You are the greatest partner, the best mom, the most amazing performer. A role model. A hero. An inspiration. I’m so proud of you. I love you so much!'

Lopez responded: 'Omg!! I love you and feel so blessed today to have you to celebrate with my baby!!'

She was awaken on her big day by an arrangement of balloons, flowers and a breakfast feast fit for a queen.

The birthday girl also received warm wishes from pals like Vanessa Hudgens, Rita Ora, Derek Hough, Leah Remini and Bebe Rexha.

J.Lo thanked everyone in an Instagram post, writing: 'Thank you so much for all of your beautiful birthday wishes! As I watch and read through all of them, I can’t help but think how I spent my last birthday with so many of you last summer celebrating and how this year is so different. 

'But what’s the same is I still feel the love from all of you and I hope you feel it too! Even though the world has changed so much, here is something that never will: I love you, I love you, I love you!!! It’s mah birthday!!!'