Beyonce, Jay Z, Sam Smith, And Justin Timberlake Join Taylor Swift For Her 25th Birthday; Where's Jessica Biel? Bey, Swift, And Biel Dance To 'Holy Grail' At Justin & Jay's NYC Concert [PHOTOS/VIDEO]

Looks like Taylor Swift had one heck of a birthday! MStars News has learned that the singer turned 25-years-old on Saturday, December 13.

Swift's party guests included Beyonce and Jay Z, Sam Smith, Justin Timberlake and more.

 So this is being 25..... #WHAT #bestbirthdayEVER

A photo posted by Taylor Swift (@taylorswift) on Dec 12, 2014 at 2:36am PST

In the photo above, you can see all of the entertainers, along with Swift's friends, posing for the cameras in cute, fun photos with gold and sliver balloons as the background props.

One person that seemed to missing for the photo was Justin Timberlake's expecting wife, Jessica Biel. According to Perez Hilton, the actress has been busy staying away from the cameras, trying to conceal her baby bump. Despite being missing at Taylor's birthday, Biel did make a public appearance at Justin Timberlake's tour, where Jay Z's also made an appearance at the concert in Brooklyn at The Barclays Center, Sunday night. Take a look at Biel enjoying her man's show. Her jumpsuit seems to have a baby bump showing, too! Don't you think so?

I'm so excited!!! I just wanna hug @JessicaBiel & @jtimberlake  Credit: @Katherine_912 +salsmamma & jtfuentes on IG pic.twitter.com/gzmKub8Pps — Lizzy (Timbervideos) (@timbervideos) December 15, 2014

Nothing like being at sold-out Barclays with the King of Brookyln... #JT2020Tour pic.twitter.com/NuoCvpbIQw

— Justin Timberlake (@jtimberlake) December 15, 2014

Taylor at the Justin Timberlake concert with Beyoncé! pic.twitter.com/Mxxiq2XgQ3 — Hardcore Swiftie (@Swift13Updates) December 15, 2014

Take a look at the video below, it seems like Taylor and Beyonce are truly having fun, as Jigga and Justin sing, "Holy Grail."

 #JustinTimberlake #TaylorSwift #Beyonce #JZ @justintimberlake @taylorswift @beyonce @ambergaleo @_dino_mike_

A video posted by Zoa Chasin (@zchasin) on Dec 12, 2014 at 9:05pm PST

Another person that was "MIA" from Taylor's birthday was Lorde. The singer dedicated a post via Tumblr that read:

"Today one of my sisters turns 25. sure, she isn’t a reeeal sister, and I haven't known her thaaat long, but it feels like forever - together, we've navigated our respective crazy years in work (her cheering me on as i went to my first award shows, did my first rolling stone cover, wrote for my first movie; me cheering her on as she became a pop titan and conquered the world for what felt like the thousandth time), in love, in friendship, and in growing up."

She adds, "I feel so lucky being part of this amazing circle of girls who are there for each other, dancing without inhibition, laughing for hours, and killing it at work, and we're pretty much all here 'cause of her. What I'm trying to say is, she's magic."

"It makes me all blushy knowing she's got my back, and from the other side of the world, I'm thinking of her on her special day," Lorde ends.

Happy Birthday Taylor!!