![Zac Efron fans lovestruck after he shares heartwarming birthday post for sister](https://images.ladbible.com/resize?type=webp&quality=70&width=3840&fit=contain&gravity=auto&url=https://images.ladbiblegroup.com/v3/assets/blt8bbf16c2d7a209e5/bltde0baf142a0f2ea1/63aade672d9709416c440b10/Most_prolific_speed_camera_in_the_UK_has_caught_almost_50_000_drivers_this_year_-_2022-12-27T075351.025.png)
Zac Efron has melted fans’ hearts after posting a sweet snap to mark his little sister Olivia’s birthday, with people joking that their ovaries are now 'on fire' thanks to the star.
The 35-year-old High School Musical alum uploaded the adorable snaps to his 56 million-strong following on Boxing Day, showing him lovingly hugging and kissing his two-year-old sibling.
![Zac Efron.](https://images.ladbible.com/resize?type=webp&quality=70&width=3840&fit=contain&gravity=auto&url=https://images.ladbiblegroup.com/v3/assets/blt8bbf16c2d7a209e5/bltff52aac5c417aecc/63aade574e56775ad23cd2df/image_(22).jpeg)
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The star captioned the birthday snaps: “Happy bday lil sis”, with fans flooding to the comments after seeing the sweet post.
One fan wrote underneath: “How is this man not married yet?!”
“IM CRYING STOP,” penned another.
Meanwhile, a third commented: “Well my ovaries are on fire now… thanks for nothing.”
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And a fourth said: “The way she looks at you!! Pure love”, with a fifth adding: “Oh. My heart… and ovaries.”
![Zac Efron with his little sister Olivia.](https://images.ladbible.com/resize?type=webp&quality=70&width=3840&fit=contain&gravity=auto&url=https://images.ladbiblegroup.com/v3/assets/blt8bbf16c2d7a209e5/blte8ab9e4524d8ae1a/63aade2eac7fdd24ffde49b7/image_(21).jpeg)
Olivia is the daughter of Zac’s father, David, and his second wife. David split from his ex wife and Zac’s mum Starla Baskett back in 2016.
The former couple share two kids - Zac and his younger brother Dylan, who also commented on the post: “I think we spoiled her."
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![D'aaawww.](https://images.ladbible.com/resize?type=webp&quality=70&width=3840&fit=contain&gravity=auto&url=https://images.ladbiblegroup.com/v3/assets/blt8bbf16c2d7a209e5/bltbab9c5de658a9e27/63aade45aa2f59689e171d0b/image_(23).jpeg)
Back in September, Zac responded to rumours he had undergone plastic surgery after his appearance in a social media video sparked debate among fans last year.
The Baywatch star took part in Earth Day! The Musical in April 2021, which led to his fans claiming that the star's jawline looked noticeably different and more squared.
Speculation arose around whether he had a procedure done to alter his appearance, but the 35-year-old spoke out on the rumours - revealing he actually shattered his jaw while running in his house with socks on.
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The accident saw the actor slip and hit his chin on the corner of a granite fountain before passing out.
When he woke up, his chin bone was ‘hanging off his face’, he explained in an interview with Men’s Health.
He revealed that the freak accident happened in November 2013, with the injury meaning his face and jaw muscles have had to work extra hard ever since.
The actor admitted he was aware of the plastic surgery rumours, but he said he wasn’t bothered.
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“If I valued what other people thought of me to the extent that they may think I do, I definitely wouldn’t be able to do this work," he said.