Lady Gaga, 26, is taking a page from the book of Kellie Pickler, 24, who shaved her head last week in support of her cancer-fighting best friend, Summer Holt Miller. An apparently inspired Gaga shaved just the back of her head in mourning for fashion photographer Terry Richardson's mother, who recently passed away.

Twitter, Lady Gaga

"R.I.P. Annie Lomax, My Mom 1938-2012," Richardson posted on his Tumblr page on Tuesday, September 11.

Lady Gaga responded with a tweeted picture of the half-shaved back of her head. "I did it for u Terry," the "Born This Way" singer tweeted. "I'm sorry about ure mommy. She has princess die, but were all princess high".

It's likely that the cryptic message refers to Gaga's song, "Princess D.I.E.," a tribute song for the late Princess of Wales, Princess Diana.

Gaga later assured that her hair was not all gone with a tweet that read, "But we still have glamour in the front."

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