
She was born Scilla Gabellini, one of five siblings, in Rimini on the Adriatic coast. Scilla initially studied law at Oxford University, graduating with a doctorate. Her interest in pursuing a legal career waned quickly, however, since her next move was a return to Italy for acting classes at Rome's Accademia Nazionale d'Arte Drammatica. At the age of seventeen, the voluptuous, blue-eyed Scilla became a body double for Sophia Loren (to whom she bore more than a passing resemblance), notably in the classic Boy on a Dolphin (1957). Two years later, she underwent cosmetic surgery to look less like Sophia in order to forge her own screen image.
In 1963, Scilla featured on the cover of several magazines, including Playboy, the Milanese publication Le Ore and Parade (at the time, the most widely read weekly in the U.S.). Though she went on to command leads in a number of films during the 60s, Scilla tended to be typecast in roles which emphasized her physical attributes, rather than her acting ability. She appeared most often in genre films, anything from innocuous sex comedies (Genitori in blue-jeans (1960), Bel Ami 2000 oder Wie verführt man einen Playboy? (1966)) to swashbuckling costume dramas (La Venere dei pirati (1960)), and from spaghetti westerns (Johnny Golden Poker (1966)) to peplum spectacles (Death on the Arena (1962), The Revenge of Spartacus (1964)). After 1971, she was afforded more challenging and critically acclaimed roles as a star in Italian TV miniseries.
Eleven years after leaving the screen, Scilla attracted media attention as a result of the murder of her 87-year old landlord father Giuseppe, by a crazed tenant at his villa on the via Campi di Torre Flavia in Ladispoli.

Tender Sharks
1967 · as Zeezee

Sodom and Gomorrah
1962 · as Tamar

Modesty Blaise
1966 · as Melina

Mara
1961 · as Mara

The Shortest Day
1963 · as L'amante di un soldato (uncredited)

Tarzan's Greatest Adventure
1959 · as Toni

The Odyssey
1969 · as Elen

The Queen of the Pirates
1960 · as Isabella, the Duke's Daughter

Village of Daughters
1962 · as Angelina Vimereati

I piaceri del sabato notte
1960 · as Patrizia

Romulus and the Sabines
1961 · as Dusia

Legs of Gold
1958 · as Gianna Savelli

Mill of the Stone Women
1960 · as Elfie Wahl

Noi duri
1960 · as Josette

The Revenge of the Gladiators
1964 · as Cinzia

Bastard, Go and Kill
1971 · as Susanna

Three Faces of Sin
1961 · as Rossana

I ragazzi dei Parioli
1959 · as Nuccia