Courteney Cox rings in 55th birthday with her famous friends on bikini break in Mexico

She flew to Mexico back in February to celebrate her pal Jennifer Aniston's 50th birthday.

Courteney Cox was back in Cabo San Lucas, Mexico, on Wednesday to celebrate her own 55th birthday bash.

The Cougar Town star defied her age in a stunning black bikini that emphasized her svelte figure as she partied with Jennifer and some of her best gal pals.

B-Day bash: Courteney Cox was back in Cabo San Lucas, Mexico, on Wednesday to celebrate her own 55th birthday bash with Jennifer Aniston and other friends

B-Day bash: Courteney Cox was back in Cabo San Lucas, Mexico, on Wednesday to celebrate her own 55th birthday bash with Jennifer Aniston and other friends

Courteney, whose birthday was on Saturday, flaunted her washboard abs in the revealing halter top bikini.

Aside from the skimpy suit, the 5ft5in actress wore a gold chain and a jeweled heart-shaped necklace.

Her raven locks were held back in a ponytail while she frolicked in the surf.

She also pulled out a pair of aviator shades to block out the beaming sun.

Joining her for her birthday festivities were longtime pal and Friends co-star Jennifer Aniston, West Wing actress Mary McCormack, film producer Kristin Hahn, actress Andrea Bendewald and actress Amanda Anka, the wife of Jason Bateman. 

Ageless: The Cougar Town star defied her age in a stunning black bikini that emphasized her svelte figure

Ageless: The Cougar Town star defied her age in a stunning black bikini that emphasized her svelte figure 

Toned tummy: Courteney, whose birthday was on Saturday, flaunted her washboard abs in the revealing halter top bikini

Toned tummy: Courteney, whose birthday was on Saturday, flaunted her washboard abs in the revealing halter top bikini

Simple look: Aside from the skimpy suit, the 5ft5in actress wore a gold chain and a jeweled heart-shaped necklace

Simple look: Aside from the skimpy suit, the 5ft5in actress wore a gold chain and a jeweled heart-shaped necklace

Beach fun: Her raven locks were held back in a ponytail while she frolicked in the surf

Beach fun: Her raven locks were held back in a ponytail while she frolicked in the surf

Courteney was seen relaxing on the beach with friends and wading into the cool blue water. 

This is Courteney's second recent trip to Cabo after flying down for Jennifer's 50th in February.

That party was considerably more stressful as Jennifer, Courteney, Amanda and Jimmy Kimmel's wife Molly McNearney had to make an emergency landing on their way south.

Though Molly is also part of this group of friends, it wasn't clear if the writer and comedian was able to make this second trip. 

Courteney was seen relaxing on the beach with friends and wading into the cool blue water
She was previously in Cabo for Jennifer's 50th birthday in February

Courteney was seen relaxing on the beach with friends and wading into the cool blue water. She was previously in Cabo for Jennifer's 50th birthday in February

That party was considerably more stressful as Jennifer, Courteney, Amanda and Jimmy Kimmel's wife Molly McNearney had to make an emergency landing on their way south

That party was considerably more stressful as Jennifer, Courteney, Amanda and Jimmy Kimmel's wife Molly McNearney had to make an emergency landing on their way south

Though Molly is also part of this group of friends, it wasn't clear if the writer and comedian was able to make this second trip

Though Molly is also part of this group of friends, it wasn't clear if the writer and comedian was able to make this second trip

Girls trip: Joining her for her birthday festivities were longtime pal and Friends co-star Jennifer Aniston (not pictured, West Wing actress Mary McCormack (L), film producer Kristin Hahn (2nd L), actress Andrew Bendwald (2nd R) and actress Amanda Anka (R), the wife of Jason Bateman

Girls trip: Joining her for her birthday festivities were longtime pal and Friends co-star Jennifer Aniston (not pictured, West Wing actress Mary McCormack (L), film producer Kristin Hahn (2nd L), actress Andrew Bendwald (2nd R) and actress Amanda Anka (R), the wife of Jason Bateman

Fun in the sun: The Hollywood stars soaked up the sun's raise while celebrating their friend's birthday

 Fun in the sun: The Hollywood stars soaked up the sun's raise while celebrating their friend's birthday

Though Courteney and Jennifer made it down to Mexico for the celebrations, the Friends stars also met up with another old friend earlier in the week.

The Scream actress posted a photo with Jennifer and fellow castmate Lisa Kudrow to her Instagram on Sunday.

'How lucky am I to celebrate my birthday with these two??? I love you girls. So much ♥️,' she gushed in the caption.

Friends reunion: Courteney shared a cute snap of her pals and former co-stars Lisa Kudrow and Jennifer Aniston on Saturday

Friends reunion: Courteney shared a cute snap of her pals and former co-stars Lisa Kudrow and Jennifer Aniston on Saturday

Since finishing her run on Cougar Town, Courteney has focused her energies on producing and non-fiction work.

She produced and hosted the Facebook Live series 9 Months With Courteney Cox, a documentary examining pregnancy among multiple cultures, races, religions and classes.

Seemingly absent from Courteney's birthday getaway was her boyfriend Johnny McDaid of the band Snow Patrol.

The two first dated in late 2013, and announced their engagement in June 2014, but by 2015 they called off the relationship and spent six months apart.

Better than ever: Absent from the Mexico trip was her boyfriend, Snow Patrol member Johnny McDaid. The couple have grown closer since ending their engagement, according to Courteney; pictured February 21 in Hollywood

Better than ever: Absent from the Mexico trip was her boyfriend, Snow Patrol member Johnny McDaid. The couple have grown closer since ending their engagement, according to Courteney; pictured February 21 in Hollywood

The time away, during which McDaid moved to London, seemed to have done the two a world of good.

'Isn't that strange? We broke off our engagement and he moved to England, then we got back together, and it's actually better than it was before. Everything is better,' Courteney said on The Ellen DeGeneres Show in January.

'Not because he's in London, although the distance after that breakup... really showed us a lot, and it's just better.'

She also joked about the terminology the longtime couple have to use to describe their relationship.

'He's my guy, he's my one. He's my partner, that's what he calls it, 'my partner'. I'm from Alabama, so you don't really say partner unless you're in the same sex... Saying partner is difficult for me,' she said.

'I was in Atlanta not that long ago and I was like, 'Oh, I'm supposed to meet my partner in section F,' and they were like, 'Oh, I'm sure she's going to be there, don't worry about it.' Not that it matters, but it's just a different way to speak.'

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Courteney Cox shows off her beach body in a bikini as she celebrates her 55th birthday with friends

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