Meghan Trainor’s slim new figure is all thanks to romantic workouts with her boyfriend Daryl Sabara.

Meghan has been dating actor Daryl since July 2016, and the pair have been inseparable ever since - which means that they also hit the gym together.

And their joint fitness sessions have seen curvy singer Meghan tone up in recent months.

"I work out so hard," she told ET. "I've been working on my health (with) my boyfriend and, yeah, we eat good and we work out, like, every day."

All About That Bass hitmaker Meghan has been sharing snaps of her new figure on Instagram, recently posing in a pair of front flap jeans from brand 69 as she filmed new singing competition The Four. She is joined on the judging line-up by Sean ‘Diddy’ Combs, DJ Khaled, record label executive Charlie Walk and host Fergie.

“Never felt so pretty/sexy in my life!,” she captioned the snap,

Although clearly enjoying her new physique, 23-year-old Meghan previously shared that Daryl, 25, was a big fan of her natural curves.

“No one expressed how they liked my body out loud in the bedroom until I met Daryl,” she told Cosmopolitan. "He is obsessed with it - every inch. And that has improved my confidence more than even Bass did."

And when the couple celebrated their first anniversary earlier this year, the blonde singer told fans her beau made her feel “beautiful and special every single day this year”.