Jessica Biel and Justin Timberlake are one step closer to taking the plunge!

The sexy pair threw an A-list engagement party on Saturday at the California home of Timberlake's longtime friend, Estee Stanley, and it was catered by Wolfgang Puck.

The dress code was cocktail attire and Timberlake donned a black suit and a fedora, while his bride-to-be wore a leopard-print halter dress cinched at the waist with a hot pink belt and matching shoes, according to US Weekly.

The 100-person guest list included Lance Bass, JC Chasez, Trace Ayala, Ellen DeGeneres, Portia DeRossi and Amy Adams.

An insider revealed to US:

"Jessica and Justin were mingling both separately and together throughout the party. Jessica seems to be very close with Justin's friends and vice versa. You can see that they have been dating for a long time and really know each others friends and family well. The party was a fun celebration and a preview of what's to come with the wedding."

Justin Timberlake's car game could rival Jay Leno's!

The singer was spotted riding around the streets of Los Angeles in his vintage 1960's Pontiac GTO with a new lady friend not named Jessica Biel.

Now we're not jumping to conclusions because JT is engaged and she's probably just a friend and/or working associate. Plus, when one rides with the top down for the world to see, it's usually because there's nothing to hide. Whatever the case may be, one thing's for sure: Timberlake's got a sweet ride!

If this is how good they look at a party, just imagine their wedding!

Justin Timberlake and Jessica Biel stepped out for their first post engagement appearance at the "Schiaparelli And Prada: Impossible Conversations" Costume Institute Gala in NYC last night, and the A-list couple really brought the glam! The Illusionist actress wore Prada for the big night, while her man opted for a classic Tom Ford tux.

For months the brunette beauty has hidden her sparkler from the public, but now there's no denying the SexyBack crooner is making an honest woman out of her. Aww! Their love definitely proved to be more than a rebound romance!

Rumor has it the pair is planning an Italian summer wedding, and we have a feeling the bash will be the hottest invite in town!

We wonder who will make it down the aisle first - Justin or Britney!

Justin Timberlake will be walking down the aisle with longtime girlfriend Jessica Biel, according to Us.

The "Sexyback" singer, 30, and Biel, 29, have been dating for four and a half years. JT popped the question last month while the two were vacationing in the mountains of Jackson, Wyoming.

A source tells the mag:

"Justin knows how much she loves snowboarding and the mountains, so it was the perfect place."

The source adds that Timberlake has "never been happier. He knew it was the right time to propose."

Elton John is moving forward with plans for his upcoming biopic, and the "Rocket Man" wants "Sexyback" singer Justin Timberlake to play the starring role.

John, who says the film will be "in the manner of Moulin Rouge," tells the LA Times:

"Number on my wish list is Justin Timberlake, because he played me before in a David LaChapelle video of 'Rocket Man' and was superb."

The 64-year-old singer will also serve as executive producer. Timberlake has not officially been offered the role.

Justin Timberlake dined at Dominick's restaurant with a few friends last night, and not only did the former boy bander enjoy an expensive meal, but his seemingly casual outfit cost thousands of dollars!

Justin wore a $4,600 quilted Louis Vuitton jacket, and he rocked a J. Lindeberg logo hoodie under his fancy winter coat. The brand's sweatshirts are generally priced at $170 and up, and when you factor in the Nike kicks, glasses and other accessories, that's more money than the average American makes in a month!

And the jeans aren't JT's own line, William Rast ... so what gives?

And what gives with Jessica Biel? Are these two together or not??? Apparently Justin doesn't want us to know ...

Last night Justin Timberlake dined at Madeo, and the singer/actor showed off his sexy scruff (and his best deer in headlights look) when we snapped him leaving the trendy Beverly Hills eatery.

We're not sure where his lady love Jessica Biel was, but rumor has it the couple will be taking their low-key relationship to the next level! “Barring a last-minute disaster, they’ll announce their engagement soon,” an insider told Britain’s Now magazine. “She’s changed her diet and exercise routine so she can get pregnant as soon as possible."

Justin Timerlake and Amanda Seyfried will do whatever it takes to promote their latest film In Time ... even if it means getting their hands dirty.

The duo shared plenty of laughs during an appearance on El Hormiguero at Vertice Studio in Madrid, Spain. Even though the show broadcasts in Spanish, JT and Amanda had earpieces that were translating in English.

Watch the co-stars play the game "Beat The Clock." What great sports!