The Aerosmith family grew by two on Wednesday as both Steven Tyler and Joe Perry became grandfathers again on the same day.
Tyler was the first to add to his brood as his daughter Mia gave birth to a seven-pound, 11-ounce boy in the morning. Her first child is Tyler's fourth grandchild.
Then on Wednesday afternoon, Perry's son Adrian and daughter-in-law Ann welcomed a six-pound, nine-ounce girl.
The new grandfathers won't have too much time to "ooh" and "ah" -- Aerosmith starts an overseas tour this Wednesday in Israel.