Taylor Swift is back in studio, so look out, Harry?

LOS ANGELES - Taylor Swift tweets she's back in studio and it might be 'uh oh' for Harry Styles.

Taylor Swift seems to have a sense of humor about her own reputation, judging from her tweets.

Having just broken up with her latest beau, the hair-endowed Harry Styles of One Direction, Swift is telling her followers in a tweet: "Back in the studio. Uh oh..."

So far, the seemingly cryptic tweet has been retweeted more than 44,000 times.

No doubt her followers know what it might mean: She's writing and recording another song about another romantic misfire.

She's done it before, as everyone knows, and it's been a hugely successful pop-music selling strategy. Swift's last album, Red, came out in October and sold a bazillion, so it's not as if she's gone into the studio because she needs the money.

Her tweet after she flew home alone Jan. 4 from a getaway with Styles in the British Virgin Islands suggested there had been trouble in paradise. She quoted from her own song Trouble. "...'til you put me down."

Swift, 23, rules the charts but she's not had as much success with her various famous boyfriends, including singer John Mayer and actor Jake Gyllenhaal, who are believed to have inspired some of her hits.

Her relationship with Styles, 18, didn't last long (a couple of months) but it produced a headline-friendly nickname (Haylor) and plenty of pictures, including the! two shar! ing a smooch on New Year's Eve.

But life goes on. He goes on a world tour with One Direction next month; she goes on her Red tour in March.

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