While some people like to wait until their a little older to expand their family, there are those who just can't wait! Case in point? Some of Hollywood's biggest stars had kids at a pretty young age, even while their careers were red-hot.
From Britney Spears who had her first child at just 22 to her younger sister Jamie Lynn who had daughter Maddie when she was only 17, check out other celebrities who had their kids at a young age by clicking through the gallery below!
1. Jamie Lynn Spears
Jamie Lynn shocked the world when she announced she was pregnant at the age of 16. She gave birth to daughter Maddie on June 19, 2008 at the age of 17.
2. Britney Spears
At the age of 23, Britney spears welcomed her first son -- Sean Preston -- on September 14, 2005. Less than a year later, she gave birth to another son -- Jayden James -- on September 12, 2006 at the age of 24.
3. Solange Knowles
Beyonce's kid sister became a mom at the age of 18 when she gave birth to a son named Daniel Julez J. Smith, Jr.
4. Reese Witherspoon
Reese and her then husband Ryan Phillippe welcomed daughter Ava on September 9, 1999. Reese was only 23. She then welcomed a son named Deacon on October 23, 2003 when she was 27.
5. Kate Hudson
Not only did Kate get married at a young age -- 21 -- but she gave birth to her son Ryder in January 2004 at the age of 24. She's since welcomed another son named Bing who was born in July 2011.
6. Hilary Duff
In August 2011, Hilary -- who was only 23 at the time -- announced she was expecting a baby with her hubby Mike Comrie. The two welcomed baby boy Luca Cruz on March 20, 2012 when Hilary was 24.
7. Kristin Cavallari
The former Lauguna Beach star gave birth to a son named Camden Jack on August 8, 2012 at the age of 25.
8. Ashlee Simpson
On November 20, 2008 at the age of 24, Ashlee welcomed a baby boy named Bronx Mowgli with then husband Pete Wentz.
9. Nicole 'Snooki' Polizzi
The wild child reality star revealed she was pregnant in earlier 2012, and gave birth to a son named Lorenzo in August 2012 at the age of 24.
Adele welcomed a baby boy named Angelo on October 19, 2012 at the age of 24.
Jamie Lynn covers Britney Spears' "Oops I Did It Again"!