'Girls just wanna have fun!': Cindy Crawford and Lisa Rinna share a fabulous lakeside holiday with their families

Cindy Crawford and Lisa Rinna seem to know just how to have fun on family vacations.

The 49-year-old supermodel and the 52-year-old actress joined forces for their families' most recent holidays, spent at a lakeside location in Canada.

Thanks to Instagram photos posted by Lisa and by Cindy's husband, Rande Gerber, the Internet got to take a peek inside the crowded fun had by all.

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Fabulous holiday: Lisa Rinna (bottom right on Sunday) and Cindy Crawford (top right) were joined by friends and family on a vacation together at a lake in Canada

Fabulous holiday: Lisa Rinna (bottom right on Sunday) and Cindy Crawford (top right) were joined by friends and family on a vacation together at a lake in Canada

Ready to go: Lisa posed in a bikini on Friday to say goodbye to the jet-ski

Ready to go: Lisa posed in a bikini on Friday to say goodbye to the jet-ski

Lisa and her daughters - 17-year-old Delilah and 14-year-old Amelia - spent time with the Crawford-Gerber family over the past week.

The Real Housewives Of Beverly Hills star posted several photos to Instagram, including one of her daughters bound together in a giant flamingo water toy.

'Girls just wanna have fun,' their proud mother captioned the photo with a Cyndi Lauper lyric.

On Sunday, Lisa had shared a more adult photo, this one featuring herself, Cindy, and two other women: '#MommaSelfie #lakelife @cindycrawford @bensonlyndie @heidi_bassett #girffriends'

The end of her vacation was announced on Friday with a series of three 'bye bye' photos added to social media.

'Bye Bye my swim buddy's xoxo,' she wrote as a caption to a photo in which the three women from before - including Cindy - posed on a dock.'

'Bye bye': Lisa said goodbye to the vacation by posting several farewell photos, including this one featuring Cindy (right) and two other friends

'Bye bye': Lisa said goodbye to the vacation by posting several farewell photos, including this one featuring Cindy (right) and two other friends

Bathing 'beauties': The size of the group was clear when Lisa posted a photo of seven 'beauties' together on a dock on Friday

Bathing 'beauties': The size of the group was clear when Lisa posted a photo of seven 'beauties' together on a dock on Friday

Fun times: Joining Lisa on the holiday were her daughters Delilah and Amelia, who she photographed in a giant flamingo floatie on Wednesday

Fun times: Joining Lisa on the holiday were her daughters Delilah and Amelia, who she photographed in a giant flamingo floatie on Wednesday

Several younger ladies - most of whom seemed to be the teenage daughters of those in the previous shot - featured in a similar 'Bye bye beauties' photo.

Lisa herself bade farewell to the holiday by posing in a bikini on a water-sports vehicle, captioning the image: 'Bye bye jet skis.'

Harry Hamlin, Lisa's actor-husband of 18 years, did not appear in the photos.

While Lisa focused on water-related activities, Rande seemed more interested in the logistics of so many friends and relatives all in one place.

On Friday, he posted a photo of a rather large and over-stuffed refrigerator: 'When you have 14 guests staying with you #lakelife.'

Many mouths to feed: Rande Gerber, Cindy's husband, shared some photos of his own, including one that showed just how much food was needed to host 14 guests

Many mouths to feed: Rande Gerber, Cindy's husband, shared some photos of his own, including one that showed just how much food was needed to host 14 guests

A second photo was a group shot showing at least 11 young people crammed into a single boat and grinning at the camera.

'Told them to go jump off a cliff so they did and came home safely. #lakelife,' he wrote.

Rande's famous wife, meanwhile, seemed to be hiding from the camera and did not show up in his Instagram photos at all.

Overloaded: Many of the teens involved in the holiday crammed into a single boat in another photo

Overloaded: Many of the teens involved in the holiday crammed into a single boat in another photo

She did manage an appearance in one of her own images though, enjoying a boat ride with Rande: 'Sunset cruise with my man,' she wrote on Thursday.

Married for 17 years, Cindy and Rande have two children, 16-year-old Presley and 13-year-old Kaia. 

This was probably a very welcome break for Cindy and Lisa, both of whom have lots going on in the next few months.

For Lisa, this means a new season on The Real Housewives Of Beverly Hills, while Cindy has a new book - Becoming, co-written with Katherine O'Leary - coming out in September.

Happy couple: While Lisa'

Happy couple: While Lisa's husband, Harry Hamlin, was not seen in the photos, Cindy and Rande posed together for a sunset shot posted on Thursday

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