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When it comes to her hair, Britney Spears is going all. The. Way.

The "Piece of Me" singer has scheduled an appointment to get super-long hair extensions from stylist Kim Vo at the Montage Beverly Hills, a source tells

Spears, 29, has recently turned to the celebrity stylist for hair help. "[Vo] wasn't responsible for her hair over the last few years but is trying to fix it now!" the source tells Us.

Although that may prove difficult given Spears' ever-evolving hair styles. "He mentioned how often she changes her mind about it. This week she wants it to her butt, and…two weeks later they'll probably cut it again."

The extensions will hardly be a first for Spears. In July, the singer revealed a botched (or simply half-done) hair extension job.