BEYONCE SETS PERSONAL RECORDS WITH 'OBSESSED': Film is best last-week-of-April opener ever; also, biggest film featuring her as above-the-title star. (Video)

Scroll down to watch Beyonce talk about learning to headbutt and more for her role in "Obsessed."

      *Sony/Screen Gems sent out a Twitter "tweet" on Sunday that said the $28.5 million opening weekend for their Beyonce film "Obsessed" is the second biggest opening in the studio's history.      

       The thriller stars Knowles and Idris Elba as a couple whose ideal marriage is threatened when a psychotic temp played by Ali Larter begins stalking the husband.

       "Obsessed" also holds the title of the biggest opening ever for a last-week-of-April release, beating previous record holder "Mean Girls" ($24.4M). It also gives Beyonce the best opening of her career as an above-the-title star, topping 2003’s "The Fighting Temptations" ($11.7M) and "Cadillac Records" ($3.4M) from late 2008.       

       As previously reported, Terrence Howard's "Fighting" came in third at the weekend box office with $11.4 million, and Jamie Foxx's "The Soloist" earned fourth place with $9.7 million. 

Beyonce talks about learning to headbutt and more for her role in "Obsessed."