Jennifer Aniston Turns Heads With a Daring Look Fans Can’t Ignore

She has just turned 50 after celebrating with hundreds of friends in Hollywood on Saturday.

And one of Jennifer Aniston's oldest friends, hairstylist Chris McMillan, was first to wish her happy birthday on Monday and shared a throwback photo of the duo embracing topless.

'Happy Birthday Jen. To my friend. To my inspiration. To my teacher. I love this girl to the moon and stars.' Chris wrote in the caption of the black and white photo.

The image is from a photoshoot the pals did together n 2014 which appeared in the January 2015 edition of Allure.

McMillan is the man behind her famous Friends haircut named 'The Rachel' and has tended to her locks over the years as she went from sitcom sweetheart to Hollywood icon.

Meanwhile, Jennifer celebrated with dozens of pals on Saturday night at the Sunset Tower Hotel in Hollywood.

The bash was jam-packed with A-listers including her best girlfriends Gwyneth Paltrow, Reese Witherspoon and Kate Hudson.

Her ex-husband Brad Pitt was also in attendance who snuck inside discreetly, with his driver dropping him off right outside the door.

Popular: Jennifer turned 50 on Monday and celebrated on Saturday night with a big Hollywood bash with 200 pals

Golden girls: Jennifer was joined by pals including Gwyneth Paltrow and Kate Hudson (seen in a photobooth snap from Saturday night)

The duo were widely thought to have remained in communication in the years since their 2005 split, but they have not been seen together.

Over 200 guests enjoyed mini burgers and tacos and a huge towering layered vanilla cake with cream and berries, which was presented to a delighted Jen, according to DailyMail.com's insider at the party.

According to our eye-witness, Brad spent three and a half hours at the party, arriving around 8pm and leaving around 11.30pm.

Brad slipped out of the venue via the underground garage, with security using an umbrella to shield him from waiting photographers.

Other A-list guests included Ellen DeGeneres, Robert Downey Jr, Chelsea Handler, Sandra Bullock, Demi Moore and Katy Perry. Leonardo DiCaprio also managed to slip in unnoticed.

Feeling merry: Many of the Friend star's pals bundled up in the photo booth with her including Reese Witherspoon, Sara Foster, Jennifer Meyer and Gucci Westman

Bundle in: Katy Perry and boyfriend Orlando Bloom joined Jennifer for this snap as well as her longtime BFF and fellow Friends alum Courteney Cox

Star-studded: Jennifer's BFF Reese Witherspoon and actress Demi Moore are pictured at the bash

She said: 'Jen looked so happy, she was glowing. The food was fantastic and everyone was dancing, it was just the best party.'

A source told People on Sunday that Jen wanted to make sure all the people she holds near and dear to her heart attended her big party.

'Basically, every single person who Jen loves attended. That included Brad,' the source told the, adding: 'The party was a celebration of Jen’s life.'

The insider continued: 'Brad, for long, was a very important part of Jen’s life. She debated back and forth with friends if she should invite him.

'She was very happy that he showed up. Many of his close friends were at the party too.'

'Every single person who Jen loves attended. That included Brad,' a source said of Jen's ex-husband Brad Pitt who also made an appearance at the bash. The former couple split in 2005