EXCLUSIVE: Pregnant Beyonce & Jay Z Affectionately Kiss at Friend's Birthday Dinner

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Baby bumps and birthday cake!

Pregnant Beyoncé and Jay Z were spotted out showing PDA on Tuesday night during a friend's birthday party at Los Angeles hotspot, Beauty & Essex, a source tells ET.

"[The couple was] in the private dining room," the source recounts. "Beyoncé was glowing and couldn't stop smiling."

WATCH: Beyoncé Flaunts Baby Bump, Celebrates Easter in L.A. With Mom Tina Lawson and Kelly Rowland

"[They] were affectionate," the source adds, noting that at one point, "he gave her a kiss ... they could tell people were looking at them, and they kinda laughed."

And of course, you can't bring your baby bump on an outing without a few people trying to say hello.

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"A few people put their hand on her stomach, which Beyoncé didn't seem to mind," the source shares. "Beyonce was seen chatting with Kelly Rowland for a bit ... Everyone at the dinner seemed to be comfortable with each other, and there was a relaxed vibe."

A Twitter video shows the couple smiling and signing "Happy Birthday" to their friend.

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As the Lemonade singer prepares to give birth to twins, she's been showing off her bump more often!

Watch the video below for Bey's Easter outing.

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