The Beach Boys "The group's original lineup consisted of brothers Brian, Dennis, and Carl Wilson, their cousin Mike Love, and friend Al Jardine."
Killing Heidi Siblings Ella and Jesse Hooper
Corrs Siblings Andrea, Sharon, Caroline and Jim
Other Groups - Destiny's Child had cousins Beyonce Knowles and Kelly Rowland - Hanson: brothers - Mary Mary: sisters Erica Atkins-Campbell and Trecina Atkins-Campbell - The Veronicas - The Jonas Brothers
