Marc Anthony sunglasses jennifer lopez divorce wave

His ex-wife may be completely enamored with boy toy Casper Smart, but that's all water under the bridge for Marc Anthony!

The Latin singer was all smiles in Miami on Thursday afternoon, where he's currently rehearsing for his 16-city "Gigant3s" tour, along with Chayanne and Marco Antonio Solis, which kicks off at the American Airlines Arena in Miami tonight.

Meanwhile, La Lopez kicked off her own summer tour last month with Enrique Iglesias, which will play 13 dates in the US before it's extended overseas. The sexy Latina Tweeted after her concert Thursday: "Good morning everybody!! Just left Minneapolis now off to Chicago!! Hope you are all having an amazing day... #LOVE!"