Jennifer Lopez knows how to celebrate her 45th birthday in style! The sexy star has been living it up with bestie Leah Remini in the Hamptons recently, and they added an impressive birthday party to their busy schedule.

The "First Love" singer had a huge party at Nammos restaurant in Southampton, and TMZ reports the eye-catching centrepiece of the night was... An "almost life-sized cake of her riding a lion"!

"A hundred guests sang happy birthday, including Khloe Kardashian, French Montana, Fat Joe, Kelly Ripa, Leah Remini, Andy Cohen and Maksim, who showed up at 1 AM," said TMZ.

J-Lo's star-studded birthday bash ran until four in the morning, with J-Lo and her pals dancing the night away.

With such a busy schedule, it's no surprise the "I Luh Ya Papi" singer hasn't publicly replied to her ex-boyfriend's sweet Instagram and Twitter birthday posts yet!

Jennifer Lopez's ex-boyfriend Casper Smart sent some super cute "Happy Birthday" messages to his previous girlfriend.

"Happppppppy Birthday to the most Beautiful lil bear in the world!!!! May all your wishes come true!! @JLo," wrote Casper Smart on his Instagram and Twitter post. But J-Lo's ex-boyfriend didn't end the message there - the post was accompanied by a snap of a cute cake in the shape of a pink bear wearing a bow. Awww!

Jennifer Lopez has been making sure she keeps fans updated with the latest in her birthday celebrations. The star posted a snap of herself in a bathtub with petals as the start of her birthday uploads, with the caption "Soaking it all in... #birthdaygirl #itsmyparty #quietbeforethestorm".

Shortly after, the birthday girl posted a photo of herself illuminated by a purple, pink and blue light.

"Let the games begin! #itsmyparty #funtimes #birthdaygirl #aintnuthingbutanumber," said Jennifer Lopez.

Sounds like J-Lo is loving her birthday getaway!