She even looks sexy when she's about to get sweaty!

Sofia Vergara headed to a workout yesterday in L.A., and the actress wore bright green snakeskin spandex, so we were so distracted we almost didn't notice she wasn't wearing her engagement ring from fiancé Joe Manganiello!

We doubt there's any trouble in paradise with the couple, because they were just in Las Vegas catching a Britney Spears concert together over New Years. The Colombian bombshell most likely left her bauble at home so as to not chip it during her free weights session.

We wonder if the 42-year-old is trying to get her body in shape to have a baby with her beau?