Reese Witherspoon’s Son Deacon Phillippe Is Her Twin in 21st Birthday Photo – E! Online

Legally twinning!

Reese Witherspoon celebrated her son Deacon Phillippe—who she shares with ex-husband Ryan Phillippe—turning 21 on Oct. 23 and proved that the mother-son duo looks more and more alike with each passing year.

“Can’t believe that this amazing young man is turning 21!!” she captioned her Instagram post. “Happy birthday, @deaconphillippe You came into my life to bring me joy, wisdom, and so much love.”

Reese—who also shares Ava Phillippe, 25 with Ryan and Tennessee Toth, 12, with ex-husband Jim Toth—continued, “You light up my life with your beautiful spirit! I love you so much.”

Along with her sweet words, the Morning Show actress posted a selfie with Deacon—an NYU student pursuing a career as an actor and musical artist—as a little boy in addition to a more recent photo with her son at a candlelit dinner on the water.

Their resemblance in the second photo was uncanny as they both flashed their thousand-watt smiles and commenters couldn’t help but point it out.

“You look like siblings,” one person remarked, while another called Deacon “as handsome as ever and still looks a lot like his mama.”