Related Clues:

• Roommate, often
• Serena, to Venus, for short
• Chloe, to Halle, for short
• Bro's sib, perhaps
• Beyoncé, to Solange, informally
• Nuclear unit nickname
• Tamera, to Tia, for short
• Frequent maid of honor, in brief
• Sis' sib, say
• "__-boom-bah!"
• Statement dismissing the relative
• First roomie, maybe
• Lilo, to Nani, for short
• First of six lives for sibling
• Big sis, for example