Star Tracks: Celebs on Social

Khaleesi, is that you? The actress takes a beauty tip for her Game of Thrones character, dying her hair platinum blonde and debuting the new look on Instagram.

The actor snapped this sweet family candid of his wife Hilaria, who shared it on Instagram, and their children Carmen, 4, and Rafael, 2. "Brush those teeth," she writes, adding a pair of heart eyes emojis.

The Jane the Virgin star packs a punch while working out with boyfriend Joe LoCicero. "Strong is my sexy," she captioned.

Richie turned 36 years old, and no one wished her a more joyous happy birthday than her The Simple Life costar. Hilton, also 36, shared a gallery of photos on her Instagram, which included throwbacks to their younger days.

She's back in action! Selena Gomez's best friend, who donated a kidney to the singer, documents her first day back at the gym.

"Happy Birthday, @jimmyfallon," the singer wrote in the caption of a photo of him and Fallon grilling. "Remember that time when we were just two bros hanging out, drinking beer, grilling hamburgers and hot dogs and talking about life and who had the better hairline and who was always the firs to crack up in our sketches…"

After confirming that she does indeed have a new man, Alex da Kid (née Alexander Grant) in her life, the Oscar winner posted a cheeky pic of herself to celebrate hitting 2 million Instagram followers.

Baby on board! Aaron Paul and wife Lauren are expecting their first child together, announcing the happy news on Instagram. "Words can't express how excited I am that this little one has entered our lives," wrote the Breaking Bad actor. "Just thought it was time I would share this beautiful news with all of you."

Akins has a new assistant for when she goes to the salon! The mother of two — and wife of country star Thomas Rhett — debuted her new short haircut on Instagram, along with a photograph featuring her 22-month-old daughter.

The dancer and actress channeled her inner Cinderella in her "balcony series" Instagram.

The This Is Us actor made his way to the set of the NBC drama following his Emmys win — and showed his six-pack!

Back to work! Prepon returns to the set of Orange Is the New Black following the birth of her daughter.

“Reminding myself that some of the most challenging obstacles can eventually reveal beauty … like hiking,” said the former Bachelor, seemingly referencing his split from Vanessa Grimaldi, after hiking Los Angeles’ famed Runyon Canyon.

“Kickstarting fall off with a PSL dress and a splash of spanx,” Hyland captioned a series of red carpet photos, which showed the Modern Family star's Spanx peeking out of her Emmys gown, on Instagram and Twitter.

In honor of the Saturday Night Live star's birthday, his fiancée Olivia Wilde posted a father-daughter snap of the star playing with their daughter Daisy.

The singer strikes a patriotic pose in front of New York's highly instagrammable beer can American flag wall.

"Since my life really began with her, I guess I turn 2 at midnight,” the Chicago native wrote on Instagram, captioning an adorable pic with his daughter, Kensli, celebrating her birthday.

Hello, gorgeous! The supermodel is flawless as ever in this bare-faced selfie.

The Modern Family costars strike a pose inside the Emmys.

Leave it to the Jane the Virgin star to squeeze in a few pull-up reps before making her way down the Emmys red carpet.

The Honest Company founder is a mama-to-be on the move, as evidenced on her Instagram story. Among the moves Alba, already a mother-of-two, performed during her sweat session? Push-ups, kettlebell lifts, resistance-band exercises and time on a stepper machine.

The tennis champ and new mom is celebrating a post-baby milestone — she fits into her jeans again!