Jack Nicholson is a dad to six kids ... She explained, "Ever since I was a baby, he's called me 'Perf,' short for perfect." Most recently, on Jan. 2, Lorraine shared holiday photos on Instagram ...

The 87-year-old—who has not been seen in public in almost two years—made a rare and heartwarming cameo with his daughter Lorraine Nicholson ... with a small grin. Jack sported a multicolored ...