Nicole confirms pregnancy and discusses jail

After months of rumours, Nicole Richie has confirmed she is pregnant.

Richie tells ABC News’ Diane Sawyer for an interview to air this week that she is almost four months’ pregnant and that her boyfriend, Good Charlotte frontman Joel Madden, is the father.

“Yes I am. We are,” she tells ABC, according to a news release.

Richie also talks about the four-day jail sentence she received after her guilty plea last week to driving under the influence of drugs.

In the latest issue of the US OK! magazine, Richie says she is feeling “healthy and happy” and her life “is clearly going to slow down.”

“I will be really happy once I have done my jail time,” the 25-year-old star of TV’s The Simple Life and friend of Paris Hilton says. “I can start fresh.”

Richie was sentenced to four days in jail.

“It was a fair, standard sentence,” the daughter of pop singer Lionel Richie, tells OK!

“I expected that.”

She must complete her jail time by September 28.

Her ABC interview was to air on Good Morning America tomorrow and Friday and on 20/20 on Friday night.