![LOS ANGELES, CA. February 21, 2001: Singer MICHAEL PENN (brother of Sean Penn) & singer AIMEE MANN at the 43rd Annual Grammy Awards in Los Angeles. © Paul Smith/Featureflash Stock Photo - Alamy LOS ANGELES, CA. February 21, 2001: Singer MICHAEL PENN (brother of Sean Penn) & singer AIMEE MANN at the 43rd Annual Grammy Awards in Los Angeles. © Paul Smith/Featureflash Stock Photo - Alamy](https://c8.alamy.com/comp/T31J8E/los-angeles-ca-february-21-2001-singer-michael-penn-brother-of-sean-penn-singer-aimee-mann-at-the-43rd-annual-grammy-awards-in-los-angeles-paul-smithfeatureflash-T31J8E.jpg)
LOS ANGELES, CA. February 21, 2001: Singer MICHAEL PENN (brother of Sean Penn) & singer AIMEE MANN at the 43rd Annual Grammy Awards in Los Angeles. © Paul Smith/Featureflash Stock Photo - Alamy
![LOS ANGELES, CA. September 13, 2006: Musician MICHAEL PENN (brother of Sean Penn) at the Los Angeles premiere of "The Last Kiss". © 2006 Paul Smith / Featureflash Stock Photo - Alamy LOS ANGELES, CA. September 13, 2006: Musician MICHAEL PENN (brother of Sean Penn) at the Los Angeles premiere of "The Last Kiss". © 2006 Paul Smith / Featureflash Stock Photo - Alamy](https://c8.alamy.com/comp/T5DEMR/los-angeles-ca-september-13-2006-musician-michael-penn-brother-of-sean-penn-at-the-los-angeles-premiere-of-the-last-kiss-2006-paul-smith-featureflash-T5DEMR.jpg)
LOS ANGELES, CA. September 13, 2006: Musician MICHAEL PENN (brother of Sean Penn) at the Los Angeles premiere of "The Last Kiss". © 2006 Paul Smith / Featureflash Stock Photo - Alamy
![Actor Chris Penn arrives as a guest for the premiere of his brother Sean's new drama film "I Am Sam" December 3, 2001 in Beverly Hills. Sean Penn portrays a mentally-challenged father Actor Chris Penn arrives as a guest for the premiere of his brother Sean's new drama film "I Am Sam" December 3, 2001 in Beverly Hills. Sean Penn portrays a mentally-challenged father](https://c8.alamy.com/comp/2CJ52Y6/actor-chris-penn-arrives-as-a-guest-for-the-premiere-of-his-brother-seans-new-drama-film-i-am-sam-december-3-2001-in-beverly-hills-sean-penn-portrays-a-mentally-challenged-father-raising-a-young-daughter-with-michelle-pfeiffer-playing-an-attorney-who-comes-to-the-aid-of-the-family-the-film-opens-in-new-york-and-los-angeles-december-28-reutersfred-prouser-fsp-2CJ52Y6.jpg)