Shakira, 45, may secretly be the best swimwear designer on the web. On Monday, the “Hips Don’t Lie” singer took to Instagram to show off a bathing suit she designed herself, along with her crazy-toned ʙuтт and abs.

“This is a new bathing suit I designed and my friend Bego made for me. I always need to create my own for the summer!” she wrote of the the lavender fringed ʙικιɴι. Last year, she designed a similar suit in neon pink.

When training for the Super Bowl earlier this year, Shakira sculpted her impressive core using trainer Anna Kaiser’s comprehensive ab workouts. (Kaiser also trains Kelly Ripa.)

Kaiser told E! News that Shakira works out five days a week, keeping her training schedule consistent. Two out of those five days, she works out twice. That said, she never keeps her workout consistent, because she doesn’t want her muscles to get too comfortable.

“You need multiple types of muscular contractions and angles, as well as tempos,” Kaiser told Women’s Health. “If you do the same motions over and over, you’re not going to get the full benefit.” In order to keep Shakira’s muscles working, she changes the singer’s workout almost every day. “We alternate between strength and cardio intervals,” Kaiser told E! News.

“Some days, we do just cardio and then strength and some days we start with strength and then do cardio, we like to mix it up.” Before tours, the pair build Shakira’s endurance so she can maintain a high level of energy throughout her entire show—and perform every night.