Taylor Swift bends the rules, that much is clear. During her recent Red Tour escapade at the O2 Arena in London, the country-pop queen brought out a special guest for a performance of "Burn" -- that's right, songbird Ellie Goulding took the stage -- during the sold-out show on Tuesday (Feb. 11).
"London, I could never thank you enough. See you next time! PS: short hair, don't care," Swift tweeted following the collaboration to her 39 million followers.
Previously, Swift enlisted Goulding during her Red Tour in 2013, bringing her out for a lovely rendition of "Anything Could Happen" in August at LA's Staples Center.
"Burn" is lifted from Goulding's critically acclaimed "Halcyon Days."
Watch the performance above.
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