Talk about a birthday suit.

Jennifer Grey posted a throwback snap of her and Tracy Pollan wearing nothing but bikini bottoms for her friend’s 66th birthday.

“Happy birthday @tracy.pollan♥️ Friendship like this is 🌟 ‘if you fall I will catch you, I’ll be waiting… time after time!'” Grey captioned the Monday post.

In the picture, the two women posed topless on the beach. For Instagram purposes, Grey covered their chests with star emojis.

“Hahahaha I love you!!” Pollan responded in the comments section.

Meanwhile, fans couldn’t get over their washboard abs.

“What 1980s exercises were you ladies doing to get abs like that? 😱🔥” one commented.

“Shredded 🔥,” another added.

The “Dirty Dancing” star, also 66, and the “Family Ties” alum have been friends for decades.

For Pollan’s birthday in 2024, Grey posted another heartfelt tribute to her bestie, giving more insight into their longtime friendship.

“Happy birthday @tracy.pollan! Bestfriends since 1974! I can’t believe that in addition to celebrating your birthday, we are also going to be celebrating the marriage of the first of your four beautiful children!” she wrote.

That year, Pollan’s daughter Schuyler — whom she shares with husband Michael J. Fox — got married on her mom’s special day.

The couple also shares daughters Aquinnah and Esmé and son Sam.

Earlier this year, Grey and Pollan went on a tropical vacation together.

“Long overdue girls trip @tracy.pollan 🤍 giggled like we were back in high school,” the “Ferris Bueller’s Day Off” star captioned a carousel of snaps frolicking at the beach.

Her longtime bestie commented back, “Love you the mostest!”