She glammed up for New Year’s Eve with fiancé Alex Rodriguez.

But it was back to business for Jennifer Lopez on Thursday, with the 50-year-old triple threat slipping her curvaceous form back into an old favorite: leggings.

The Jenny From The Block hitmaker made the most of her peach posterior in the satin legwear.

No rest: It was back to business for Jennifer Lopez on Thursday, with the 50-year-old triple threat slipping her curvaceous form back into an old favorite: leggings

Continuing the color theme, Jennifer paired the dark pants with a black turtleneck.

She completed the look with black sneakers and a pair of dark, mirrored sunglasses, and wore her brunette tresses up in a high bun.

The Hustlers star carried her sparkly water bottle emblazoned with the title of her hit 2019 film.

Baby got back! The Jenny From The Block hitmaker made the most of her peach posterior in the satin legwear

Back to black: Continuing the color theme, Jennifer paired the dark pants with a black turtleneck

The outing comes just days after the former backup dancer celebrated the New Year with all her kids and fiance by her side.

Jennifer and the former pro baseball player rung in the new year with their combined four children and even shared a midnight kiss.

In a video Alex posted on Instagram, the family were seen counting down into the new year before the engaged parents packed on the PDA.

‘Happy New Year 2020,’ he captioned.

Alex, who looked very dapper, also took to his Stories to wish his fans – even encouraging them to partake in lots of drinking and smoking to wrap up the decade.

Happy New Year! As midnight struck, Jennifer was surrounded by her kids and packed on the PDA with fiance Alex

Having the time of their lives: Jennifer and Alex attended a black tie event and looked incredibly dapper while dancing the night away

Family: After giving each other a kiss, A-rod and J-lo went on to share the love with their kids

Love is in the air! A-rod and J-lo got engaged in March 2019

‘Hey what’s up everybody, happy new years, I want you to go out there and drink and eat and drink and smoke cigars, have a great time with your loved ones.

But that was all for a good reason, with the 43-year-old alerting his 3.3 million followers that on New Year’s day, he was going to give them a 𝓀𝒾𝓁𝓁er 10 day challenge.

Jennifer also wished her 108 million followers during their night out.

Mommy-daughter time: A friend’s Instagram account saw Jennifer cuddle up to daughter Emme, 11, at one point

The team: Jennifer took to social media to pose with her 2020 squad which included her costume designer and official photographer

Best wishes! ‘From our family to yours, I hope you’re having the best night of your life with only the best to come. We love you’

3,2,1! The family were altogether as they counted down into the new year

Last hangout of the year! Earlier in the day, a friend shared a pic of makeup free J-lo hanging out with him

Nestled up with Alex, she said: ‘Happy new year everybody.’

‘From our family to yours, I hope you’re having the best night of your life with only the best to come. We love you.’

And while Jennifer didn’t mention anything about a challenge, January marks one year since she and her man embarked on a grueling 10-day no sugar no carbs challenge.

2019 was massive for Jennifer in both the work and personal life front. She announced her engagement to Alex in March.

Neither pair have revealed any wedding details.

When’s the big day? 2019 was massive for Jennifer in both the work and personal life front. She announced her engagement to Alex in March. Neither pair have revealed any wedding details