Jane Lynch -- Doggin' It with Estranged Wife Look-alike

Jane Lynch and her estranged wife Lara Embry are BACK TOGETHER -- just kidding ... it's just one of Jane's close friends ... who happens to look exactly like Lara.

Jane hit the streets of West Hollywood Monday with their dogs -- and everyone on the planet thought Jane and Lara were patching things up, but it's just not so.

The other woman in the photo is actually Jane's longtime friend Laura Coyle ... but, yeah ... she does look A LOT like Lara.

As we reported, Jane revealed last month that she and her estranged wife were calling off their 3-year marriage.