Serena Williams and fiance Alexis Ohanian welcomed a baby girl on Friday, Sept. 1, 2017, according to reports.
"Dancing with the Stars" pro Peta Murgatroyd welcomed son Shai with Maksim Chmerkovskiy on Jan. 4, 2017.
Whitney Port ("The Hills") gave birth to her first child, Sonny, with husband Tim Rosenman, on July 27, 2017.
Model Hannah Davis, who's married to Derek Jeter, gave birth to daughter Bella Raine on Thursday, Aug. 17, 2017.
Fashion designer and former star of "The Hills" Lauren Conrad and TV husband William Tell welcomed their first child together, Liam James Tell, on July 5, 2017.
"Miracles of Heaven" actress Jennifer Garner and estranged husband, "Batman v Superman: Dawn of Justice" star Ben Affleck, have three children together: Violet, Seraphina Rose Elizabeth and Samuel Garner.
Reality TV star Kendra Wilkinson has two children with husband, former NFL receiver Hank Baskett: Hank Baskett IV, born Dec. 11, 2009, and Alijah Mary, born May 16, 2014.
Singer Ciara shares a son, Future Zahir Wilburn, with rapper Future, her ex-fiance. Ciara and her Seattle Seahawks quarterback husband, Russell Wilson, who married in July 2016, announced the birth of their daughter, Sienna Princess Wilson, on the same day as the NFL draft, Friday, April 28, 2017. She brought Future Zahir along on July 16, 2015, for the Nickelodeon Kids' Choice Sports Awards in Westwood, Calif.
"Today" anchor Hoda Kotb announced that she adopted a baby girl, Haley Joy, who was born on Feb. 14, 2017.
Vanessa and Nick Lachey became parents for the third time on Saturday, Dec. 24, 2016, with the birth of son Phoenix. Their newborn joins brother Camden and sister Brooklyn.
Mila Kunis welcomed her second child, a boy named Dimitri Portwood, with husband Ashton Kutcher on Nov. 30, 2016. The former "That '70s Show" co-stars are also parents to daughter Wyatt Isabelle, born in October 2014.
Hilaria Thomas Baldwin
Yoga instructor Hilaria Thomas Baldwin has three young children with Long Islander Alec Baldwin: Carmen, Rafael and Leonardo.
Singer Janet Jackson and husband, Qatari billionaire and businessman Wissam Al Mana, welcomed their first child, according to People. Their son, Eissa Al Manna, was born on Tuesday, Jan. 3, 2017.
"Today" show co-host Savannah Guthrie gave birth to her second child, a boy named Charles, Thursday, Dec. 8, 2016. She and husband Michael Feldman are also parents to daughter, Vale, born in August 2014.
Blac Chyna and Rob Kardashian welcomed a baby girl, Dream Kardashian, on Nov. 10, 2016.
Bristol Palin, a mother of two children, is expecting her third child. Her son Tripp was born in December 2008, with former fiance Levi Johnston, and her daughter Sailor Grace was born in December 2015, with husband Dakota Meyer.
Danielle Jonas and eldest Jonas brother, Kevin, welcomed their second daughter, Valentina, Thursday, Oct. 27, 2016. They are already parents to Alena, born in February 2014.
Broadway stars Audra McDonald and Will Swenson welcomed their first child, Sally James McDonald-Swenson, who was born on Oct. 19, 2016.
Victoria's Secret model Behati Prinsloo has welcomed her first child with husband, Maroon 5 frontman Adam Levine. Their daughter, Dusty Rose Levine, was born in September 2016.
Academy Award-winning actress Natalie Portman, who was raised primarily in Jericho, gave birth to her second child with husband Benjamin Millepied, a baby girl named Amalia, born on Feb. 22. The actress and her choreographer husband are already parents to 5-year-old son, Aleph.
Singer Pink and husband Carey Hart welcomed daughter Willow in June 2011 and son Jameson on Dec. 26, 2016.
"Unbreakable Kimmy Schmidt" star Ellie Kemper and her husband of four years, writer Michael Koman, welcomed their first child together, a baby boy, according to reports. Neither the parents nor their representatives have commented, and no details of time or place of birth, nor the infant's name, have been given.
"Grey's Anatomy" Emmy Award-winner Katherine Heigl and her singer-songwriter husband, Josh Kelley, share one biological child together, Joshua Bishop, born in December 2016. They adopted their first child, daughter Nancy Leigh, in September 2009, and their second, Adalaide Marie Hope, in April 2012.
Former contestant on "The Bachelor" and "Dancing With the Stars," Melissa Rycroft, has three children with husband Tye Strickland: a daughter, Ava, 5; a son, Beckett, 2, and a newborn son, Cayson Jack.
"You Oughta Know" singer Alanis Morissette and her rapper husband Mario Treadway (who goes by the stage name Souleye), have a son, Ever Imre, born in December 2010, and daughter Onyx Solace, born in June 2016.
Chrissy Teigen welcomed her first child, daughter Luna Simone Stephens, with husband John Legend, on April 14, 2016.
"Scandal" star Kerry Washington and husband, former NFL pro Nnamdi Asomugha, are parents to daughter Isabelle Amarachi, born in April 2014, and a son, Caleb Kelechi, born in October 2016.
"Vinyl" star Olivia Wilde and "Mother's Day" actor Jason Sudeikis are parents to son Otis, born April 20, 2014, and daughter Daisy, born Oct. 11, 2016.
Eva Mendes and longtime boyfriend Ryan Gosling are parents to Esmeralda Amada, born in September 2014, and Amada Lee, born in April 2016.
Jessica Biel and Justin Timberlake have one son together, Silas.
Actress Zoe Saldana is mom to twin boys, Cy Aridio and Bowie Ezio, born Nov. 27, 2014, with husband Marco Perego. The couple is also parents to son Zen, born February 2017.
Tamera Mowry-Housley has two children with Fox News correspondent Adam Housely, a son named Aden and a daughter, Ariah.
"Teenage Mutant Ninja Turtles: Out of the Shadows" actress Megan Fox has three children with Brian Austin Green: Noah, Bodhi and Journey.
"Heroes" star Hayden Panettiere welcomed her first child, Kaya, in Dec. 2014 with professional boxer Wladimir Klitschko.
Model Amber Rose and ex-husband, rapper Wiz Khalifa, have a baby boy, Sebastian Taylor Thomaz.
Kristin Cavallari has two boys and one girl: Camden, born in August 2012, Jaxon, born in May 2014, and Saylor, born in November 2015.
Reese Witherspoon became a mother in September 1999 when she gave birth to daughter Ava. Then, in October 2003, the actress welcomed son Deacon. Both children are with former husband Ryan Phillippe. Her third child, and first with husband Jim Toth, named Tennessee, was born in September 2012.
Coco Austin and husband Ice-T welcomed a baby girl named Chanel in November 2015.
Gwen Stefani has three boys: Kingston, born May 2006, Zuma, born Aug. 2008 and Apollo, born Feb. 2014.
Nicole Richie's children include daughter Harlow and son Sparrow with husband Joel Madden.
Reality TV star Kim Kardashian and husband, rapper Kanye West, have a little girl together, North, and a little boy, Saint.
Model Gisele Bundchen has two little ones with husband Tom Brady of the New England Patriots: Benjamin and Vivian. Bundchen also is stepmom to Brady's son with ex-girlfriend Bridget Moynahan, John.
Julianne Moore is mother to son, Caleb, and daughter, Liv, with Bart Freundlich.
Ashlee Simpson has a daughter named Jagger with husband Evan Ross, and an older son named Bronx with ex Pete Wentz.
Former "Lizzie McGuire" star Hillary Duff has a son named Luca with ex-husband/former hockey player Mike Comrie.
"Americon Idol" Season 1 winner Kelly Clarkson has a baby girl, River Rose, and a baby boy, Remington Alexander, with husband Brandon Blackstock.
Country singer Jessie James Decker has a daughter, Vivianne, born March 2014, and son, Eric, born Sept. 2015, with NFL player Eric Decker.
Golden Globe winner Kate Hudson has two children, one with ex-fiance Matt Bellamy (of Muse) named Bingham, and one with ex-husband Chris Robinson (of The Black Crowes) named Ryder.
Jessica Simpson has a daughter named Maxwell and a son named Ace with husband Eric Johnson.
The Academy Award winner has two children, daughter Laila, adopted in 2015, and son Louis, adopted in 2010.
Drew Barrymore and ex-husband Will Kopelman have two daughters together, Olive and Frankie.
Penelope Cruz has two children -- son, Leo, and daughter, Luna, -- with husband Javier Bardem.
Blake Lively gave birth to her first child, daughter James, with Ryan Reynolds on Jan. 5, 2015. On Sept. 30, 2016, several media outlets reported the actress had given birth to their second child in New York.
Shakira has two little boys named Milan and Sasha with partner Gerard Piqué.
Superstar couple Beyoncé and Jay-Z welcomed twins Rumi and Sir on June 13, 2017. They are also parents to Blue Ivy, born Jan. 7, 2012.
Jennifer Love Hewitt and her "The Client List" co-star/husband Brian Hallisay are the parents of a baby girl, Autumn James Hallisay, born Nov. 26, 2013 and baby boy, Atticus James Hallisay, born June 24, 2015.
Actress Kelly Rutherford is mom to son Hermes Gustaf Daniel Giersch and daughter Helena Grace Rutherford Girsch. Their father is her ex-husband, German businessman Daniel Giersch.
Actress Mariska Hargitay has three children with husband Peter Hermann: Amaya, Andrew and August.
Demi Moore is mother to daughters Rumer, Scout and Tallulah, with ex-husband Bruce Willis.
Founder of The Honest Company, Jessica Alba, and husband Cash Warren have two daughters together, Honor and Haven.
Katie Holmes has a daughter named Suri with ex-husband Tom Cruise.
Founder of lifestyle website GOOP, Gwyneth Paltrow and ex-husband/lead vocalist of Coldplay, Chris Martin, have two children together: Apple and Moses.
Angelina Jolie and husband Brad Pitt have three biological children together, twins Knox and Vivienne and daughter Shiloh. Together they are raising Jolie's adopted children, Maddox, Pax and Zahara.
Kourtney Kardashian has three children with on-again, off-again boyfriend Scott Disick: Mason, Penelope and Reign.
Tori Spelling and Dean McDermott have five children together: Liam (March 13, 2007), Stella (June 9, 2008), Hattie (Oct. 10, 2011), Finn (Aug. 30, 2012), and Beau (March 2, 2017).
Jennifer Lopez gave birth to twins Max and Emme in March 2008 when she was married to Marc Anthony.