French Montana's Little Bro Teases a Wedding With Iggy

Iggy Azalea and French Montana could be hearing wedding bells soon ... according to his brother, who went on a "family date" with the Aussie rapper.

We got Iggy at Catch Saturday night, where she was horsing around with French's younger bro, Zack Kharbouch -- before revealing they'd be related sooner than later. After all, they've had other "family" affairs before ... like that time they all rode in a helicopter.

Still, our camera guy asks if she'd consider dating another Nick Young-type. We're guessing no, if Zack is spittin' any truth here.