Nicole Richie Tells Ellen She's 'Not Sure' About Wedding Details

'It's a big deal,' Richie says of her upcoming nuptials to Joel Madden.

Joel Madden recently told us that when it comes to planning his wedding with Nicole Richie, the couple are taking their time. Richie chatted with Ellen DeGeneres on her talk show on Tuesday (March 9) and echoed Madden's sentiment.

"I am [engaged]. We have been together about three and a half years," Richie, who also rapped on the show, said. About specific plans, she said, "Not yet, but soon [we'll have a wedding date]. Yeah, it's a big deal."

When asked if DeGeneres would be one of the guests at the wedding, Richie responded, "You will definitely be there, obviously. Hello! Huge part of our life and relationship."

All joking aside, Richie did share that she hadn't yet decided on the details. "Yeah, I'm actually not sure [about maids of honor] — I've been on the road," she said. "I just got home and so it's really going to be, like, now that's the time for me to sit down and think about what I want."

Richie also talked all about her big boy, Sparrow. "He is six months. He's huge. He was almost eight pounds when he was born. [Harlow's] 22 pounds and she's 2 and he's 18 pounds and he's 6 months — needless to say, I'm exhausted."

When MTV News caught up with the future Mr. Richie at the Oscars over the weekend, he was excited to share the news with us. "Yeah, we're engaged! I finally did it!" he said. "You know what? Just like the engagement, [we're not rushing anything]. I mean, we had two kids before we got engaged, so getting married — I couldn't give you a timeline. We kind of move at our own pace, so we'll see."