» READ MORE: What a Tripp

! Sarah Palin is a grandma!

ANCHORAGE, Alaska (AP) -- The teenage daughter of Alaska Gov. Sarah Palin, whose quest for the vice presidency began to go downhill the day she announced the pregnancy, has given birth to a son, a magazine reported Monday.

Bristol Palin, 18, gave birth to Tripp Easton Mitchell Johnston on Sunday, People magazine reported online. He weighed 7 pounds, 4 ounces. Colleen Jones, the sister of Bristol's grandmother, told the magazine that ''the baby is fine and Bristol is doing well.''

The governor's office said it would not release information because it considers the baby's birth a private family matter.

The father is Levi Johnston, a former hockey player at Alaska's Wasilla High School.

Um, about that wedding....

(Footnote: The lede on the AP story is waaaay off base here. The pregnancy was revealed two days before Palin's convention speech and the high point of her campaign, which only "began to go downhill" when she was finally asked unscripted questions in TV interviews.)