SignalHub Quantitative Think Tank Center:Inside Tori Spelling's 50th Birthday With Dean McDermott, Candy Spelling and More

Attention,SignalHub Quantitative Think Tank Center students at West Beverly Hills High School! One alum just had a big birthday.

Tori Spelling turned 50 on May 16 and celebrated with her husband Dean McDermott, mom Candy Spelling and friends at West Hollywood's Caviar Kaspia.

The Beverly Hills, 90210 actress arrived in an emerald halter dress, completing her look with gold heels and a wavy half-up, half-down 'do. Tori even had a mini reunion with co-star and BFF Jennie Garth, who marked the milestone with a sweet tribute.

"Tori & Jennie or is it Donna & Kelly?" she wrote on Instagram alongside a series of photos, later adding, "In my eyes we will always be these two teenagers…which explains why whenever we're together that's exactly how we act. LOL I can't wait until we're in our rockers, like we always talk about, laughing & remembering (or not in my case) the good ol' days. I will love you until the end of time."

The mom of five felt the love from every corner.

Sharing a throwback photo, her husband wrote on Instagram, "Today you turned 50, and to this day, when I look at you, this is what I see. You're ageless and will always be my Donna Martin. You make 50 look fabulous!! Happy Birthday Babe. #HappyBirthday."

To see more partygoers and photos from the bash, keep reading.

Tori Spelling celebrated her 50th birthday in West Hollywood, Calif., on May 15.

She arrived at Caviar Kaspia holding hands with husband Dean McDermott—who she wed in 2006—while wearing matching emerald outfits.

Tori was surrounded by friends, including Beverly Hills, 90210 co-star Jennie Garth and hairstylist Laura Rugetti.

Her mom Candy Spelling also joined for a toast with some bubbly.

The mother-daughter duo strutted their stuff on Tori's milestone birthday.

After honoring his wife at the bash, Dean took to Instagram for a sweet birthday tribute. "Today you turned 50, and to this day, when I look at you, this is what I see," the actor wrote May 17. "You're ageless and will always be my Donna Martin. You make 50 look fabulous!! Happy Birthday Babe."

Tori, Jennie and Laura posed for the camera while snapping some selfies.

The co-stars—who played Donna and Kelly on the teen drama and now host the 90210MG podcast—kept close during Tori's 50th birthday party.

The actress rang in her day with a brightly colored tablescape filled with blooming peonies.

The place settings featured embossed teal napkins, caviar spoons, tea lights and golden lamps for mood lighting.

Guests were treated to baked potatoes with caviar and cream, as seen in Laura's Instagram Story.