▲Her first pregnancy with Scott Disick came as a shock to the then 30-year-old, who at the time was also split from Disick, then 26. She considered abortion, but told People that Disick had wanted the baby and she decided to keep it.

▲The star later announced her third pregnancy with Scott Disick on an episode of 'Keeping Up with the Kardashians,' admitting: "It was not a plan."

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She had wanted a handful of children, but it seemed her rocky relationship with Disick was the reason another pregnancy was not planned. He went into rehab soon after the child was born, and they split soon after that.

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The English media personality was recovering from the birth of her son, of just three months, with new husband Kieran Hayler, when she first suspected she was pregnant again.

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Soon after news of the surprise pregnancy broke, Price reportedly tweeted that Hayler was "having a full-blown sexual affair" with her best friend Jane Poutney. She headed into her third divorce while preparing for the birth of her fifth baby.

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The actress had her first two sons just 17 months apart. She told Ellen DeGeneres that both pregnancies were a surprise and joked that she won't let her husband, Brian Austin Green, "near me anymore." The couple went on to have another son, but ultimately separated in 2020.

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Fox added that she got pregnant with her second son two weeks into filming 'Teenage Mutant Ninja Turtles,' an action film that required her to do a lot of running, jumping, and stunts, which then led to some pretty bad nausea on set...

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She was starring as Storm in 'X-Men: Days of Future Past' at the time and powered through it, though she admitted that her "ever-growing belly" did occasionally get in the way.

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The world was likely shocked alongside the reality TV judge in 2013 upon learning that Lauren Silverman was expecting his baby—not least because she was married at the time to Cowell's friend Andrew Silverman, all of whom had vacationed together.

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A 16-year-old Spears was really hitting her stride on TV with 'Zoey 101,' but soon after it wrapped its fourth season in 2007, she announced she was pregnant with her first child, with then-boyfriend Casey Aldridge.

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Lauren and Andrew were divorced soon after, and Cowell said the surprise pregnancy changed his life for the better.

▲The star was 46 when she was surprised by her second pregnancy. She had thought the changes in her body were just premenopausal. "They call it a geriatric pregnancy," she told Ellen DeGeneres.

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She later told E! Online that she wasn't feeling well one day while driving around with her friends, so they stopped at a gas station where she took a test and saw it was positive. She struggled to accept the news, admitting, "I didn't understand it and I was young."

▲Talking to InStyle in 2016, Alba admitted that her first pregnancy, with husband Cash Warren, was not planned.

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Luckily she added, "I was like, 'OK, this is where my life is going. I always wanted to be a mom.'"

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Nicole Richie and Joel Madden were not dating for long before news broke that they were expecting, which was also particularly surprising because he had just broken up with Hilary Duff.

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Kristin Cavallari and NFL player Jay Cutler were both surprised to learn she was pregnant in 2012.

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The news came after a tumultuous few months where they broke off their engagement, only to announce it was back on soon after. But in 2020, the two separated.

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The singer was already finding fame at age 17 when she found out she was pregnant. She married her son's father, high school sweetheart Daniel Smith, and the couple moved to Moscow, Idaho, where he was attending college.

▲She told Harper's Bazaar that she was lost in Idaho but devoted her life to her son, Julez. Knowles and Smith divorced two years later, but they've been able to healthily co-parent, and Knowles' career has since found even more fame.

▲In 2012, the actress announced her fourth pregnancy with Dean McDermott, just five months after welcoming her daughter Hattie. She told Us Weekly, however, that she had found out one month after Hattie was born, confirming it was definitely unplanned.

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After the miscarriage, the rapper realized he wanted a baby, and "she got pregnant again—like right away," he said. Fortunately, it worked out the second time. The couple, however, later called it quits.

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She added, "The doctor said, 'Wait six weeks [to have sex],' and Dean was like, 'They tell everyone that.' We didn't wait that long with Stella or Liam. I was like, 'Well, I don't want him to think that the sex is going downhill,' so now we're on baby No. 4."

▲In a 2012 interview with ELLE, Simpson said her body subconsciously warned her about her unexpected pregnancy. She had been planning an "all-day drinking binge" with her friends, but she "started feeling this overwhelming guilt."

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In 2012, the model's then-fiancé Wiz Khalifa revealed on Hot 107.9's radio show that the first time she was pregnant "it was unexpected," but she had a miscarriage soon after they'd found out.

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For so many reasons—from focusing on career opportunities to uncertainty about partners, to even fertility complications—pregnancies can come at a completely unplanned time. Sometimes this can be a devastating event, but for many people, especially those who comfortably have the means to provide for a child, it can be marvelously life-changing.

Click through to see which celebrities have admitted to unplanned pregnancies.