Hollywood can be considered as one big town for cougars. You can find numerous female celebrities who find attraction in men who are way younger than them. It is believed that a woman who goes for the younger guys than herself keeps her youthful beauty aglow.

According to expert relationship psychologists, this came from some parts of the culture obsessing over staying forever young. These days, many will find many women working out and doing all they can to keep their physical appearances at its best. On the other hand, there are young guys out there who enjoy the company of older women because most of them have a higher level of maturity and have gone through more experiences in life.

Here we feature the top cougars in Hollywood and the age differences of their young boyfriends.

Halle Berry and ex, Gabriel Aubry had a nine year difference in their previous relationship. They had a daughter in 2008 that they named as Nahla. Rumours said that their huge age difference was the factor that placed a lot of complications to their once happy relationship.

'Cougar Town' lead star Courteney Cox was once a cougar herself before she was separated from ex-hubby David Arquette. She is seven years older than the actor-comedian.

Hitmaker Mariah Carey has a 12-year gap with husband Nick Cannon. Up to now, they prove that age does not matter when it comes to love especially with Carey giving birth to twins. The singer was also supportive by being her hubby's side when Cannon was reported to have a serious ailment.

Jennifer Aniston did not miss the list when she once dated the genius musician John Mayer. They were in an on and off relationship for almost a year before they ended things up in March of 2009.

Susan Sarandon and Tim Robbins were not married but were considered one of the longest lasting celebrity couples. After 23 years, they separated and Sarandon was reported to have a new boyfriend who is twice younger when she was with Robbins.

Check out the slideshow for more celebrity cougars in the industry.

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Hugh Jackman (2nd left) poses for photographers with (L-R) daughter Ava, wife Deborra-Lee Furness and son Oscar during a ceremony where the actor places his hand and foot prints in cement in front of the Grauman's Chinese Theatre in Hollywood April 21, 2009.

Demi Moore and Ashton Kutcher

Renee Zellweger and Bradley Cooper's two-year romance fizzled in March because he wanted to focus on his career. Reports are that on Cooper's rebound list were Jennifer Lopez, Jennifer Aniston, Olivia Wilde, French actress Melanie Laurent and Zoe Saldana.

This iconic pop star is a true A-lister in dating younger men. She is now dating Brahim Zaibat, a 24 year old British dancer.

Eva Longoria and Eduardo Cruz began their relationship in 2011 after her split from Tony Parker. Longoria and Cruz broke up briefly last March, but reunited in the spring. Their latest split was confirmed this past June.