Tiny in size, huge in Astros spirit!

The Houston Astros are preparing for Game 5 of the American League Division Series against the Kansas City Royals tonight, and Houston baseball fans of all ages are rallying behind the home team.

Even the tiniest newborns in the neonatal intensive-care unit (NICU) at Children’s Memorial Hermann Hospital.

Staff at the hospital passed out Astros shirts to the parents and children in the NICU.

A set of adorable twin brothers, Gavin and Braxton Lewis, had their very first picture together while sporting their new Astros gear.

Go 'Stros!