Beyoncé Blows Up Her Booty

Beyoncé has put that sagging post-pregnancy butt behind her — and the tush tune-up went so well she's now looking at other body bits that moved south!

“Jay-Z’s been urging her to do this for years!” an insider tattled. “She finally warmed up to the idea.” The mom of three, 35 — who had twins Rumi and Sir, siblings to 5-year-old Blue Ivy, on June 13 — once relied on exercise to keep her posterior perky. She claimed climbing stairs was “the best thing for butt cheeks!”

And while she was seen hitting the gym as recently as Aug. 24, it now must require more than a workout to maintain an enviable end game. “I go through stages like every woman,” Beyoncé revealed. “I like being curvy but sometimes I get curvy in the wrong places.” Stubborn pregnancy pounds helped the R&B diva decide the time was right for a raise.

“She’d put on some weight with the babies and realized she wanted a rounder, firmer booty to go with them,” squealed the source. “She’s excited about this new look, and confident about her contours again. She feels she has a more desirable hourglass figure, and is wearing clingy clothes — even her favorite tight jeans — again.”

The “Lemonade” lady is now lounging at a luxury $400,000-a-month rental in Malibu as she recovers from birthing her twins. “She’s living in seclusion and resting up,” the insider said. “There’s ample time for her to fine-tune her new body now.”

Hubby Jay is over the moon about the results! “He’s thrilled!” spilled the source. “He’s pushing for her to get a few more nips and tucks, too, including a boob job. “And Bey’s definitely open to a breast augmentation, considering how nice her butt turned out!”