Sofia Vergara -- Vegas Woman I Saved Had WAY Too Much to Drink

Sofia Vergara is finally speaking out after her heroic moment in Vegas last week -- claiming the woman she rescued simply had too much to drink that night ... and that's why she collapsed.

TMZ broke the story ... Sofia was leaving Hyde nightclub at the Bellagio around 3AM New Year's Day, when she saw the unidentified woman fall unconscious ... and rushed to help her.

Sofia called in to Kidd Kraddick in the Morning yesterday, claiming the woman "was just a little drunk, you know. It was Vegas. It was New Year's."

Sofia says she ran over and called for her cousin -- a doctor -- to come help. Once Sofia and her cousin established the woman was breathing, they waited for paramedics to arrive.