Kelly Osbourne has apologized to singer Lady Gaga for an intemperate tweet a day earlier. "Lady Gaga, I acted like a child last night," the "Fashion Police" co-host, who turned 29 Sunday, wrote after having chastised Gaga that day for sending her "a birthday cake via my MOTHER in a country half the world away." A contrite Osbourne late Monday wrote, "Just not into publicity stunts. Call me and we will end this like adults. I don't want to fight anymore." Gaga has not responded. The two women have feuded since 2009.

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Kelly Osbourne has apologized to singer Lady Gaga for an intemperate tweet a day earlier. "Lady Gaga, I acted like a child last night," the "Fashion Police" co-host, who turned 29 Sunday, wrote after having chastised Gaga that day for sending her "a birthday cake via my MOTHER in a country half the world away." A contrite Osbourne late Monday wrote, "Just not into publicity stunts. Call me and we will end this like adults. I don't want to fight anymore." Gaga has not responded. The two women have feuded since 2009.