Justin Timberlake, Jessica Biel Planning Big Summer Wedding

Justin Timberlake and Jessica Biel are getting married this summer, and while they have kept a low profile about their engagement, they are going all out.

The couple are pulling out all the stops for a big wedding, reports say.

"Justin and Jessica are planning a big [summer] wedding," a source close to the pair tells People. "Jessica initially wanted a smaller, more intimate wedding, but Justin from the beginning wanted a big wedding and that's what they have decided on."

According to the source, Timberlake, 31, and Biel, 30, have decided they want to "include all their friends" in the wedding celebration, says the source.

The pair have recently been spending time together in Atlanta where the burgeoning film star is shooting his latest project, Trouble with the Curve.

Biel, who was seen sporting her engagement ring last month, has yet to decide on her dress, the source notes, but is "very involved" in the planning.

As for the groom-to-be, the source says: "Justin has promised her the best day ever." Can't fault the guy for setting the bar high, can you?