Actress Sienna Miller and "Brothers and Sisters" star Balthazar Getty have ended their controversial relationship.

"I'm single at the moment, and I'm completely happy with that," the "Factory Girl" told Us Weekly. "It's nice not to have a relationship that the press constantly wants to scrutinize and discuss. I'm cool with being on my own."

The 26-year-old starlet endured a backlash from the media after she was snapped topless and kissing then-married Getty, 33, in July. Later that month, Balthazar announced he and wife Rosetta were separated -- and released a statement apologizing for "the great embarrassment" he caused himself and his family.

Getty has four children with his estranged wife.