Angelina Jolie and Brad Pitt
Angelina Jolie, Brad Pitt and adopted son Maddox ChivanRobyn Beck/Getty

International Women's Day is celebrated across the world on 8 March to honour women, past and present, for their achievements in various fields. It is also the day when we remember women who have fought injustice and cruelty so as to make the lives of others better.

The first Women's Day was celebrated by the Socialist Party of America in 1909 in remembrance of the struggle of the garment workers who protested against the poor work conditions earlier that year. Two years later Women's Day was official marked and observed by over a million people in Austria, Denmark, Germany and Switzerland. Since then people all over the world have been observing Women's Day on the same date.

Talking about movies, women have played a vital role in shaping Hollywood as well. Without them the filming industry would not be what it is today. Some of these actresses/celebrities have been more so inspirational by adopting children.

On the special occasion, IBTimes UK has compiled a list of Hollywood celebrities who have adopted children.

Angelina Jolie

Angelina Jolie and Brad Pitt have three adopted children: son Maddox Chivan from Cambodia, daughter Zahara Marley from Ethiopia and son Pax Thien from Vietnam. The couple got married in August 2014.

Nicole Kidman

Nicole Kidman and Tom Cruise have two adopted children: Isabella Jane (born in December 1992) and Connor Anthony (born in January 1995). The couple married in 1990 but split in 2001.

Charlize Theron

Theron has two adopted children: son Jackson, who was adopted in 2012, while daughter August was adopted in August 2015. Theron was in the movie Mad Max: Fury Road that won six awards at the 2016 Oscars.

Sandra Bullock

Sandra Bullock adopted son Louis Bardo Bullock back in 2010. The news about the adopting was only revealed after the Oscars in March the same year. At that time Sandra was involved in a divorce case with Jesse James.

Katherine Heigl

Heigl and her husband Josh Kelley, have an adopted daughter called Nancy Leigh Mi-Eun Kelley. She was adopted from South Korea in 2009. The couple also adopted daughter Adalaide Marie Hope from the US in April 2012.

Meg Ryan

Meg Ryan has an adopted daughter named Daisy True from China. Daisy was adopted when she was just 14 months old. Meg Ryan has a child with Dennis Quaid by the name of Jack Henry Quaid.

Calista Flockhart

Calista Flockhart has an adopted son named Liam. He was adopted in 2001 when she was a single parent. Calista and her husband Harrison Ford have been raising Liam since the couple began dating in 2002.