It looks like Reese Witherspoon gave birth to her own mini-me!

The 39-year-old actress has just announced that her daughter Ava Phillippe has turned 16, and she shared the good news on Instagram with a sweet photo. The post featured a split picture of Ava as an adorable little girl and as a teenager who is a spitting image of her movie star mother.

"Wow! My sweet girl turns 16 today! I am so blessed to have such a kind, compassionate, brilliant, artistic, all-around wonderful daughter who makes me a better person everyday. I [heart] you @avaphillippe," Witherspoon wrote, tagging her daughter in the caption.

Reese Witherspoon's followers immediately reacted, admitting that they thought the 'Legally Blond' actress had posted an old picture of herself when she was younger. The resemblance between mother and daughter is amazing, as evidenced by Ava Phillippe's Instagram posts.

The picture of Reese Witherspoon and Ava Phillippe that was taken before the 'Hot Pursuit' premiere has gone viral and fans have immediately called the mother and daughter team "twins."

Ava Elizabeth Phillippe was born on September 9, 1999 to Reese Witherspoon and then-husband Ryan Phillippe. She has a 12-year-old brother named Deacon and a two-year-old half-brother named Tennessee.

Reese Witherspoon may have more reasons to celebrate this week. The actress/producer has just been hailed People's "Best Dressed Star of 2015," and she was quick to explain that she has a personalized style.

"I've always been Southern so I've always been attracted to that J. Crew preppy look with more color and sense of humor," Witherspoon told People. "Even when there are boho vibes going on in California. I don't feel comfortable in cutoff jean shorts. I think they're really cute; they're just not my personal style."

Reese Witherspoon's most recent project was the comedy 'Hot Pursuit' with Sofia Vergara.