Jennifer Lopez celebrates being 'in the best shape of my life' at 49

So long, Fly Girl. Hello, Superwoman.

With the end of her Las Vegas residency soon approaching, Jennifer Lopez is taking a moment to pat herself on the (very toned) back — and flash her muscles in the process.

Looking strong and sexy in a figure-hugging red dress, the 49-year-old singer and actress showed off her biceps — and yes, her famous curves — in a new Instagram post that fans are praising as “inspiring” and “amazingly beautiful.”

According to Lopez, she’s “feeling like superwoman” thanks to her determination to be physically fit enough to get through an exhaustive performance schedule.

“I made a promise to myself that instead of letting it wear me down I would be even stronger at the end of it,” she wrote of prepping herself for the heavy workload. “I will work out and be in the best shape of my life.”

Mission accomplished, though she says it wasn’t always easy to stay disciplined. Lopez noted that she fought off exhaustion and inconvenient travel plans to keep herself on track.

Now it’s her fans who are pledging to follow her lead. “You look amazing and you inspire this 54-year-old to push herself every day,” read one comment.

“Wow, amazing,” added style influencer Aimee Song. “Thanks for the motivation.”

“I was going to skip my workout this morning but now I’m not!!” wrote another fan. “True inspiration!!!”

Let the pushups commence.