Jon Hamm celebrated his 42nd birthday with a little help from his friends over the weekend, and Breaking Celebrity News has all the exclusive details.

The ruggedly handsome Mad Men star was spotted dining out with long-term partner Jennifer Westfeldt, 43, on-screen wife Jessica Pare and 30 Rock actor Jack McBrayer at trendy Los Angeles eatery Little Dom’s on Saturday.

But, despite the star-studded company, Hamm only had eyes for his screenwriter girlfriend.

“It was Jon’s birthday and he had a modest gathering of famous friends in attendance,” an eyewitness tells Radar.

“But, unlike his on camera ladies' man alter-ego Don Draper, Jon's attention didn’t wander from Jennifer the entire night!

“In fact, despite all the others around them, they were literally gazing into each other’s eyes as they sat at the table.

“Jack was with them, and Jessica joined the party later to pass on her best wishes, but even she couldn’t distract Jon from Jennifer!