United Kingdom, Dec. 11 -- Sydney Sweeney felt a "bittersweet emptiness" after she finished filming Christy.

The 28-year-old actress plays a former professional boxer in the new sports drama movie, and Sydney has confessed to experiencing a range of emotions when filming wrapped.

The blonde beauty - who has enjoyed a meteoric rise in recent years - told Variety: "It was this bittersweet emptiness.

"You're so proud of the work that you did. It's a dream role. You just experienced six months of everything you've ever wanted. Then everybody gives hugs, kisses and you have to say goodbye to it forever."

Christy Martin was America's best-known female boxer in the 1990s, and Sydney developed a close bond with the former sports star during t...