 Soriano started her showbiz career as a child star in 1971, appearing as the kid sister of Tirso Cruz III in Sampaguita Pictures' "My Heart Belongs to Daddy".Appearing in a cameo role which lasted only for only 15 minutes, Soriano's screen presence in the film made an impact as she showed her singing, dancing and acting talent.She was seen in various films in the early 70s like "Dalawang Mukha ng Tagumpay", "Somewhere over the Rainbow", "Lady Luck", "Captain Barbel" and was billed simply as Maricel.