The actress turned more than a few heads as she wore her underwear as outerwear at the Glee 100th Episode Celebration in Los Angeles last night (18 March).
Lea - who plays Rachel Berry in the hit TV show - sported a figure-hugging strappy lace dress, but left little to the imagination by wearing pretty much nothing underneath!
Luckily her frock featured an in-built panel to cover her bust, and she also flaunted a pair of high-waisted black briefs.
With so much skin on show, Lea ensured she was glowing from head-to-toe with sunkissed shoulders and a polished nude manicure.
But not content with just making a statement with her raunchy frock, Lea upped the ante with a loud pair of gold heels covered in eye-popping spikes. Yikes!
She toted a two-tone boxy clutch and opted for low-key jewellery with a gold band around one finger.
So, just how does the 'Canonball' singer manage to look so good? Well, it seems Lea owes her impressive figure to her love of hiking.
Last month, Lea posted a few snaps of herself decked out in sports gear while hiking with her parents.
Clearly a fan of the great outdoors, we've also spotted Lea jogging around the Hollywood hills in Los Angeles.
We wish we had her motivation...
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Watch Lea's music video for 'Canonball' below: