Britney filed for divorce from K-Fed on Monday, and is asking for sole custody of the kids. She didn't tell him in advance -- could it be that the timing of her decision surprised herself as well?

Despite having walked down the aisle twice already, Britney isn't exactly a settling-down type of gal. She has a free-spirited Sagittarius Sun and an independent-minded Aquarius Moon. These are the two most important planetary bodies in her chart, and they're in signs that don't like to be fenced in.

Not surprisingly, Britney's actions to end her marriage are mirrored by current planetary movements that have triggered her freedom-loving planets. Uranus -- the planet of independence and sudden, unexpected breaks -- is making a 90-degree angle square to Britney's Sagittarius Sun. Squares are tense astrological angles that call for action to reduce the friction they create. It is not uncommon for someone undergoing a Uranus transit to do something radical in order to break out of a stagnant life situation. Since the Sun in a woman's chart also signifies an important man in her life, it's not surprising that Britney would choose this time to make the big break.

So what motivated Britney to file for divorce early this week? The Full Moon in Taurus on Sunday, November 5 made an exact 90-degree angle square to Britney's Aquarius Moon. Full Moons result in a culmination -- they bring matters to light. The Full Moon fell in Britney's Eighth House of sex and emotional intimacy, and her natal Moon lies in her Fifth House of children and creativity. Perhaps something happening behind-the-scenes in their marriage -- that didn't jibe with her devotion to her children -- drove her to L.A. County Superior Court. Either way, her Aquarian desire to forge her own path was triggered the day before she filed for divorce. Her recent appearance on David Letterman shows that she's looking like her old self again, so maybe saying good-bye to K-Fed is the best thing for her!