Britney Spears might be in the midst of her big comeback, but she is still a bit of a trainwreck.

The pop star just did a photo shoot for Elle magazine and just like the time she did that OK! magazine shoot where she got dog poop on a designer gown, she managed to fudge up another dress.

The source said, “They dressed her in all these beautiful couture clothes, and, well, let’s just say she forgot what time of the month it was. It wasn’t pretty.”

Oh Britney. The tampon string disaster last month and now this. Her last two periods haven’t gone well. Let’s just hope she doesn’t go for the trifecta.

[NYP]