Carrie Underwood is fit and trim in a new bikini shot posted to her Instagram on Thursday (May 30).

The "Southbound" singer was repping her Calia swimwear in a two-photo video loop taken in early May while the Cry Pretty Tour 360 was in California, according to a press release. The tour kicked off in May and will continue through October.

Watch: Carrie Underwood Bikinis Up for a Summer Vacation

Underwood's baby boy Jacob was born in January, giving her and husband Mike Fisher two sons. In March she shared a candid Instagram picture and caption talking about how she was having a hard time bouncing back after the birth.

"I go into the gym and I can’t run as fast or as far. I can’t lift as much weight or do as many reps as I could a year ago. I just want to feel like myself again ... for my body to feel the way that I know it can," she wrote.

Then came a promise to focus on what she can do and an acknowledgement that her body in large part still belongs to Jacob: "I promise to stop analyzing every angle and every curve and every pound and every meal. I’m going to keep staying the path because it is a journey and as long as I’m always working towards my goals, one day I’ll reach them."

The photos show the singer in Calia's ruched trim printed bikini top and women's swim boy short bottoms. Underwood regularly poses in the brand's wears on Instagram, weaving her personal health goals in with the stylish athletic clothing and outerwear. Often the photos are candid shots, with the star in little or no makeup, sweating or beet red from the exercise.

Underwood and her tour are currently in Canada. Maddie & Tae and Runaway June are opening the Cry Pretty 360 Tour.

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