Gwyneth Paltrow celebrated her son Moses' 20th birthday with a loving Instagram tribute. She posted a recent selfie alongside throwback photos, praising his character.

"Happy 20th birthday to you @mosesmartin. You are the definition of a gentleman—kind, intelligent, thoughtful and soulful," Paltrow wrote. "It’s beyond words how incredible you are. I love you to bits, mama."

Moses, whom Paltrow shares with ex Chris Martin, recently supported his mother at the Los Angeles premiere of her film 'Marty Supreme,' marking his red carpet debut. Despite reportedly being uncomfortable with some intimate scenes in the movie, he attended the event with her.

Paltrow was joined at the premiere by her husband Brad Falchuk, while Moses sported a stylish suede sweater and corduroys for the occasion.