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NICKY HILTON ROTHSCHILD
Becoming a mom again fairly quickly might just be a piece of cake for Hilton Rothschild, who announced she and husband James Rothschild were expecting their second child less than a year after welcoming daughter Lily Grace. Back in September 2016, the star's mom, Kathy, said her daughter had taken to motherhood "like a duck to water."
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DR. PRISCILLA CHAN
Fifteen months after welcoming their daughter Max, Facebook CEO Mark Zuckerberg and wife Dr. Priscilla Chan announced they were expecting their second child.
"After our difficult experience having Max, we weren't sure what to expect or whether we'd be able to have another child," read the couple's announcement post. "When Priscilla and I first found out she was pregnant again, our first hope was that the child would be healthy."
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Reality TV star Rob Dyrdek and wife Briyana (née Flores) are currently expecting their second child — a baby girl — who will serve as little sister to big brother Kodah Dash, 9 months.
"Now that we know Kodah will be a big brother to a little sister, we are over the moon and can't wait to meet you!" read Bryiana's social media post. "You are the perfect addition to our family, sweet girl, and we love you so, so much! I can’t believe this is real."
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JESSA (DUGGAR) SEEWALD
It looks like the Counting On star and husband Ben Seewald couldn't wait to give son Spurgeon a little brother! The couple announced they were expecting their second child — a boy named Henry — when their firstborn was 9 months old.
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Eighteen months after welcoming their son, Charlie Ocean, Jeff Goldblum and wife Emilie shared joyous news with the world: the couple's family was expanding! In April 2017, their second son, River, was born.
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In February 2015, Mark-Paul Gosselaar and wife Catriona added to their growing family once more with the birth of daughter Lachlyn Hope — whom they welcomed when big brother Dekker Edward was 16 months old.
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The New Girl star and husband Jacob Pechenik waited less than two years to give daughter Elsie, then 18 months old, a little brother named Charlie Wolf.
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After welcoming her first child, daughter Liv, with husband Adi Ezra in August 2016, the model announced on Instagram in March 2017 that she is expecting another baby. "Something's cooking …" she captioned a mirror selfie in which her black shirt is rolled up to expose her tiny baby bump.
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Fourteen months after welcoming her second child with husband Alec Baldwin, Hilaria gave birth to the couple's third child, son Leonardo, in September 2016. The latest addition to the Baldwin clan joined big sister Carmen, 3 and big brother Rafael, 2.
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On July 8, 2016, Tyler welcomed her third child — and second child with fiancé David Gardner — daughter Lula Rose. The pint-sized cutie, now 11 months, arrived 17 months after the birth of Tyler and Gardner's first child together, son Sailor Gene, 2. Both have children from previous relationships; Tyler is also mom to son Milo, while Gardner is dad to son Gray.
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While Fox and husband Brian Austin Green's third child arrived almost four years after welcoming their last addition, the actress's first and second pregnancies were different. The couple's son Bodhi, 3, came immediately after their son Noah, 4.
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Seven months after the star delivered daughter Maxwell, 5, in May 2012, she and husband Eric Johnson confirmed a sibling — their son Ace, 3 — was on the way. "I was extremely shocked. I was shocked because I was going through a lot of hormonal changes trying to get back to the old, vibrant Jessica," Simpson said.
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One month after daughter Hattie, 5, was born, Spelling got the unexpected news in 2012 that she was pregnant for the fourth time. "I was shocked, obviously," the actress and reality star told PEOPLE. Perhaps she shouldn't have been; of her post-baby relationship with husband Dean McDermott, she admitted, "I didn't want him to think that the sex was going downhill … So here you go. Here's four." But hey, more kids means more parties for the family, who welcomed son Finn Davey, 4½, in August 2012, and their fifth son, Beau Dean, in March 2017.
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Seeing double? Now 11 and 10, the pop star's cuties Sean Preston and Jayden James Federline could pass for twins, though they're separated by almost exactly a year (their birthdates are two days apart).
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KIMBERLY VAN DER BEEK
James Van Der Beek and his wife Kimberly are parents to four kids — all closely related in age. In March 2016, the couple welcomed their fourth child, daughter Emilia, 1, who joined siblings Olivia, 6, Joshua, 5, and Annabel, 3.
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In September 2005, Klum and then-husband Seal welcomed their first child, son Henry, 11, only to announce the impending arrival of son Johan, 10, a few months later. The model and the performer, who have since split, are also parents to 7-year-old daughter Lou. Klum is mom to 13-year-old daughter Leni, her child from a previous relationship.
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Ne-Yo and ex-girlfriend Monyetta wasted no time when it came to giving their first child, daughter Madilyn, 6, a little sibling. Eleven months after Madilyn's arrival, the singer and his partner welcomed son Mason, 5. The couple has since split, with Ne-Yo marrying Crystal Renay, who delivered their first child together in March 2016.
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Fifteen months after Pak and actor-husband Terrence Howard became parents to their first child, 1-year-old Qirin, they welcomed son Hero in August 2016. While Hero is the couple's second child, Howard has three children from a previous marriage: daughters Heaven and Aubrey, and son Hunter.
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Before splitting, Watts and Liev Schreiber welcomed sons Sasha, 9, and Kai, 8, who are one-and-a-half years apart.
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Before getting hitched in 2011, the TV personality and now-husband David Charvet began expanding their little family — welcoming daughter Rain, 10, in January 2007, and Shaya, 9, in March 2008. Burke-Charvet is also mom to Neriah Shae, 17, and Sierra Sky, 15, with ex-husband Garth Fisher.
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KERRI WALSH JENNINGS
The Olympian and mother of three explains that the 11-month separation between sons Joseph, 8, and Sundance, 7, was all part of the plan. "That's exactly how we wanted it," she blogged for PEOPLE about her timing. The decision was in part inspired by the volleyball player's close relationship with her own brother, 11 months her senior. "It was my dream to have our children so close to each other and I feel so grateful and humbled that the big guy upstairs blessed us with the realization of that dream," Walsh Jennings wrote. After a bit of a break, she and husband Casey Jennings welcomed daughter Scout Margery in April 2013.
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