The actress penned a touching message

Reese Witherspoon paid tribute to her "amazing" mom Betty who celebrated her 74th birthday on Thursday.

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Taking to Instagram, the actress penned a gushy post alongside a trio of endearing photos. In one photo, their remarkable similarity was painstakingly obvious.

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Looking every inch her carbon copy, Reese appears to have inherited her mom's twinkling eyes and radiant smile.

Bursting with joy, the 46-year-old captioned her sweet snaps: "Happy Birthday to the most amazing Mama in the whole world! ? Every day I get to hear you laugh while you tell the best stories is such a gift! Please keep bringing the sunshine into our lives."

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The star's fans raced to weigh in on the post, with one writing: "Love this. Mamas are so special," whilst a second remarked: "Enjoy every moment with your Mama! Happy Birthday."

Reese bears a striking resemblance to her mother

Other fans couldn't help but draw parallels between the mother-daughter duo. "You look like your mama… beautiful... happy birthday," wrote a third, whilst a fourth added: "Same sparkle. Happy Bday to your mom."

Reese's touching message comes after she celebrated her son Deacon's huge milestone achievement. Her eldest child dropped a surprise album earlier this month, and the doting mother wasted no time in sharing her pride.

The actress shares Ava and Deacon with her ex-husband

The news was a big one for the young musician, who recently even announced that he would be making his acting debut in Mindy Kaling's .

Sharing a link to the SoundCloud version of the record on her Instagram Stories, Reese gushed about how much she enjoyed his work and what a proud mama she was. "Listening on repeat!" she wrote.

The loved-up couple live in Los Angeles

"I love watching you create music and putting your thoughts/heart/ideas into the world." She even included a picture of the album cover - photo of a young Deacon covered in paint.

Alongside 22-year-old-daughter Ava, the actress shares 18-year-old Deacon with her ex-husband Ryan Phillippe. Reese shares her youngest son, Tennessee, with her current husband, Jim Toth. The couple wed in March 2011 and reside in an epic $15.9million mansion in Brentwood.

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