Fred Savage welcomes baby boy with wife Jennifer

Boy, meet world! "Wonder Years" star Fred Savage and his wife, Jennifer, welcomed a son recently, tweeting an adorable Instagram picture of the little guy's hand on Monday (Nov. 26).

"He's here," writes the proud pop and older brother to "Boy Meets World" star Ben Savage.  

The Twitter announcement was the first the public had heard of Jennifer's pregnancy, and Fred hasn't posted additional details like the baby's date of birth or name.

Fred and Jennifer also have two other children -- 6-year-old son, Oliver, and 4-year-old daughter, Lily.