Elfy baby for Liv

Liv Tyler has given birth to a son, making rocker Steven Tyler a grandfather.

Tyler, daughter of the Aerosmith frontman and model Bebe Buell, gave birth in New York on Tuesday.

"They are both doing great," Tyler's publicist, Stephen Huvane, said.
He said the baby had not yet been named.

Actress Tyler, 27, is married to Royston Langdon of the band Spacehog. The two tied the knot in March 2003.

"My baby is so handsome I can't stand it," People magazine quoted Tyler as telling a friend. "He also has full lips," she said in an apparent reference to her father's most famous feature.

Tyler played the elf princess Arwen in The Lord of the Rings trilogy.

Her screen credits also include Jersey Girl and Armageddon.