Proud father-to-be Adam Levine shared a photo of wife Behati Prinsloo's growing baby bump on Instagram on Monday. "Yowza," the Maroon 5 frontman, and The Voice coach, captioned the topless photo of the Victoria’s Secret model. The 37-year-old and Behati, 27

Proud father-to-be Adam Levine shared a photo of wife Behati Prinsloo's growing baby bump on Instagram on Monday. "Yowza," the Maroon 5 frontman, and The Voice coach, captioned the topless photo of the Victoria’s Secret model. The 37-year-old and Behati, 27