Melissa McCarthy was born in Plainfield, Illinois on August 26th, 1970 to Sandra and Michael McCarthy. Jenny McCarthy was born in Evergreen Park, Illinois on November 1, 1972, to Linda and Dan McCarthy.
Melissa is an only child while Jenny has three other sisters, Lynette, Joanne (former professional basketball player), and Amy. This does however mean, that Melissa and Jenny are first cousins.
Melissa and Jenny McCarthy are first cousins
It is well-known that just because two celebs have the same last name, you can't automatically assume they are related, however in this case, you can! It was in fact Jenny McCarthy who got Melissa her first role as a guest-star on her short-lived sitcom.
Melissa and Jenny have both gone on to cement their careers in Hollywood both going in very different directions. Jenny is an actress, model, and television host who got her career start as a nude model for Playboy in 1993, while Melissa is a highly sought-after actress, comedian, and writer who gained prominent recognition as "Sookie" in Gilmore Girls.
Both Jenny and Melissa McCarthy are very successful
While both women are very successful still today in their respective chosen career paths, it appears that they do not have a very close relationship. Melissa McCarthy didn't even attend Jenny's most recent wedding to Donnie Wahlberg in 2014. However, Jenny did post a Throwback Thursday photo to her Instagram with Melissa in 2014. As far as we know, there is no bad blood but maybe just very different personalities.
Melissa McCarthy can be seen in the recent movies Superintelligence, The Starling, and Thunder Force, keeping very busy. Jenny McCarthy is currently a judge on The Masked Singer.