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And they look so good. You can watch a video of the frappe being made below
In the video, TikTok user @melika_zaidi, explains how to mix a milkshake with a single shot of espresso to make the delicious iced bev.
"Next time you're at McDonald's you have to try this... McDonald's vanilla milkshake and espresso," she wrote.
"Step 1, take lid off milkshake. Step 2, pour in espresso. Mix, mix, mix and enjoy.
"Not even gonna' lie, it's stunning. This is an award-winning beverage."
And other TikTok users were blown away by the idea, with hundreds commenting that they were going to try the order themselves.
Meanwhile, others suggested opting for a chocolate milkshake - which we think would be equally delicious.
In other important Maccy's news, earlier this week we told you how the same TikTok user revealed her unusual McDonald's food order - and it was dubbed 'illegal' by fellow customers.
Posting on TikTok, the woman explained how she combined a double cheeseburger with a mayo chicken to make a huge supersize burger.
To demonstrate, she can be seen taking a mayo chicken and a double cheeseburger and combining them, with one piece of bread in the middle.
Some are loving the hack, with one person commenting: "The best combo ever man."
While another said: "Wanna try this later ngl."
And a third added: "This low key looks so good."
Others, however, were not impressed at all, with some claiming it made them feel sick.
One said: "This feels illegal."
While another added: "Feel physically ill."
And a third added: "Thought of this makes me wanna go vegan."
Would you order this?!
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