There is no major mainstream film titled "Sexy Girl" released in 1978. The search results suggest that the phrase may refer to several different adult or erotic titles from that year, or a slightly later film with a similar name.
The story follows a drug smuggling operation that goes wrong. Sexy Girl (1978) mp4
Jean-Pierre Armand, Karine Gambier, and Martine Schulz. 3. Short Films from 1978 There is no major mainstream film titled "Sexy
Directed by Richard MacLeod, this film is also known by the alternative title . Sexy Girl (1978) mp4
Below are the most likely matches based on 1978 cinema records: