The INSIDER Summary: 

• Lady Gaga was barista for a day to promote her new Cup of Kindness line of drinks at Starbucks.
• Gaga wore the signature green apron over a floral bow-neck frock with pink sunglasses.
• A video shows the singer shaking up one of her new beverages for a customer.
• The new line of drinks will raise funds for the Born This Way foundation.

What would you do if you went to order your fave Starbucks drink and your barista was someone… familiar? More than familiar, in fact, but famous? Like, Lady Gaga famous?

That was the exact sitch coffee-lovers found themselves in yesterday when Mother Monster herself showed up to one lucky Starbucks location to promote the new Cup of Kindness drinks she launched with the mega-roaster to help raise funds for the Born This Way foundation. Starbucks is donating .25 from every purchase of each of the four drinks included in the beverage collection to the organization Gaga co-founded with her mother, Cynthia Germanotta, which launches empowering programs for youth.

Though the “The Cure” singer glammed things up a bit with a pair of pink sunnies and a floral bow-neck frock (because, Gaga), she did her part and hopped behind the counter in the brand’s signature green apron and a tag bearing her name to whip up drinks from the collection, like her fave, the Matcha Lemonade (yum).

And just in case you thought the songstress was just popping in for a quick photo op, you’d be wrong: There’s actual video of her making bevs for customers— just look at that shake!

Marketing ploy though it was, it worked: The "A Star Is Born" actress reportedly had a line out the door to witness her try her hand at the art of coffee-making. We can’t say we blame them — we’d have been right there too!

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