Flashback Lunch: Robin Thicke Really Is Alan Thicke’s Son

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After watching Robin Thicke perform with Lil’ Wayne at the Grammys last night, you might find it hard to believe that the sexy crooner is the son of Growing Pains dad Alan Thicke. But here they are in 1991, Robin already looking slick despite his adolescent acne. The pair are still close, too—Robin sang at Alan’s third wedding in 2005.

Since musical skill runs in the family—Alan and Robin’s mom, Gloria Loring, wrote the theme songs to The Facts Of Life and Diff’rent Strokes—maybe they could bust out a duet on his next album. “Keepin’ It Thicke”?

[Photos: FilmMagic/WireImage]

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