At last! More than three years after she accepted boyfriend David Otunga's proposal, Jennifer Hudson is moving full speed ahead with their dream wedding.

The nuptials will take place later this year in Chicago, her hometown, an insider tells Star. "Jennifer loves spending time downtown. I wouldn't be surprised if she had it in the heart of the city," says the insider.

"There will be around 500 guests. She feels she deserves to have a big, gorgeous wedding, since she's waited for so long. She's giddy with excitement!"