Shakira looks simply amazing, amazing, more than four months after giving birth to her second child. On Sunday, the 38-year-old Colombian pop star shared on Instagram three photos of herself working out with her trainer, Anna Kaiser, founder & CEO of AKT InMotion. The singer appears skinnier than ever and super toned, wearing a black cropped tee that shows off her toned abs, paired with black leggings and purple and blue sneakers. She kept her long, curly blond hair loose.