A certain showgirl brought razzle-dazzle to The Tonight Show Starring Jimmy Fallon and Late Night With Seth Meyers last week, as Taylor Swift delivered big ratings on both of NBC’s late-night talk shows.

Swift’s appearance on The Tonight Show on Monday, October 6, gave Jimmy Fallon his biggest audience for a regular episode since Greg Gutfield appeared on the show in August, according to LateNighter . Nielsen Live+3 Day data showed that 1.77 million viewers tuned in, up 44 percent over the previous Monday.

Even better, Swift upped The Tonight Show’s 18-to-49-year-old audience from 161,000 to 242,000 week over week, an increase of 50 percent. That’s also the show’s best performance in that demo, an important one for advertisers, in eight months.

Swift’s takeover of Late Night

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