A new and distinct Guzmania hybrid named ‘ROSTARA’ characterized by solid growth habit funnel-form rosette plant, measuring about 55 cm in height (above the pot when flowering) numerous, green color foliage (measuring about 40-55 cm length and about 3-4.5 cm in width) Superior floral bract production primary bracts are red in color (closest to RHS 46A) compound inflorescence, measuring about 22 cm in height and about 22 cm in diameter and long lasting habit.