Heidi Klum, 51, enjoys water sledding outing in Porto Cervo, Italy with family including daughter Leni, 20

Heidi Klum enjoyed the summer weekend Saturday with a high-octane water sled outing in Porto Cervo, Italy, with her four children and husband Tom Kaulitz.

The German supermodel, 51, and her four children: daughter Leni, 20, with ex Flavio Briatore; and sons Henry, 18, and Johan, 17, and daughter Lou, 14, with ex-husband Seal – were pictured during the festive outdoor excursion this weekend.

The America’s Got Talent personality was stylish during the outing, wearing a leopard print bikini that highlighted her figure.

The former Project Runway host wore her dark black locks down and wore sunglasses and dangling earrings during the Italian outing.

She was seen waving to her children as she sat on the edge of a pier, rode in a boat and enjoyed the family fun while on vacation.

Heidi Klum enjoyed the summer weekend with a high-octane water sledding outing in Porto Cervo, Italy, on Saturday with her four children and husband Tom Kaulitz

Klum's eldest child, daughter Leni, 20, was pictured in a bikini with a purple top and pink bottoms

Klum’s eldest child, daughter Leni, 20, was pictured in a bikini with a purple top and pink bottoms

She wore a patterned red and leopard skin wrap and green shorts with floral patterns over her string bikini.

Klum’s eldest child, daughter Leni, was pictured in a bikini with a purple top and pink bottoms.

Leni, who is following in her mother’s footsteps with a career in the modeling industry, was spotted earlier this weekend with her boyfriend Aris Rachevsky, who is on a family holiday to Europe.

Leni, who is signed to IMG Models Worldwide, wore a pair of short brown boots as she walked on a pier.

Leni, who is following in her mother's footsteps with a career in the modeling industry, wore a pair of short brown Ugg boots as she walked on a pier.

Leni, who is following in her mother’s footsteps with a career in the modeling industry, wore a pair of short brown Ugg boots as she walked on a pier.

Heidi will celebrate her five-year wedding anniversary with Tokyo Hotel guitarist 34 later this summer

Heidi will celebrate her five-year wedding anniversary with Tokyo Hotel guitarist 34 later this summer

It looked like she was taking a photo with a large boat visible in the background

It looked like she was taking a photo with a large boat visible in the background

Heidi used the wrap to cool off from the sun as she made headlines last week after taking off a denim top she wore in the YouTube series Hot Ones

She took off her denim top in an attempt to cool down after some of the chicken wings she tasted seemed a little spicy to her taste

Heidi used the wrap to cool off from the sun as she made headlines last week after taking off a denim top she wore in the YouTube series Hot Ones

After sitting on the edge of the pier, Heidi stood up and used her shawl to protect herself from the sun

After sitting on the edge of the pier, Heidi stood up and used her shawl to protect herself from the sun

On Sunday, Klum posted a video of herself and Kaulitz wearing matching leopard print swimsuits to her 12.1 million followers on Instagram.

“Love is… when it matches your bikini print,” Klum captioned the photo, which comes a few months before the couple’s fifth wedding anniversary.

Heidi made the news last week during an appearance on the popular YouTube program Hot Ones.

She took off her denim top in an attempt to cool down after some of the chicken wings she tasted seemed to be a little spicy for her taste.

After Heidi used the top to fan herself, host Sean Evans joked: ‘Whoa! Wow! Now I’m feeling warm too, Heidi!’

It's been a busy month for the star, who was also on hand to watch son Henry graduate from high school in Pacific Palisades, California, earlier in June

It’s been a busy month for the star, who was also on hand to watch son Henry graduate from high school in Pacific Palisades, California, earlier in June

Leni was pictured wearing black sunglasses while riding the boat

Leni was pictured wearing black sunglasses while riding the boat

The young model, signed to IMG Models Worldwide, appeared to be checking her phone during the outing

The young model, signed to IMG Models Worldwide, appeared to be checking her phone during the outing

Heidi waved her arms as she enjoyed a water sled ride

Heidi waved her arms as she enjoyed a water sled ride

Klum had an active day as she was pictured enjoying the amenities of the Italian location they were in

Klum had an active day as she was pictured enjoying the amenities of the Italian location they were in

The supermodel seemed to be in good spirits as she enjoyed the holiday weekend

The supermodel seemed to be in good spirits as she enjoyed the holiday weekend

Klum waved to her loved ones during the day out

Klum waved to her loved ones during the day out

Heidi grinned from ear to ear as she rocked up her colorful beach cover-up

Heidi grinned from ear to ear as she rocked up her colorful beach cover-up

On Sunday, Klum posted a video of herself and Kaulitz to her 12.1 million Instagram followers

On Sunday, Klum posted a video of herself and Kaulitz to her 12.1 million Instagram followers

The famous couple wore matching leopard print swimsuits

The famous couple wore matching leopard print swimsuits

Heidi was afraid her microphone would become loose during the recording.

She asked the presenter: ‘My microphone is in my crotch, is that a small problem?’ whereupon he told her that there were other microphones active in the recording room.

It’s been a busy month for the star, who was also on hand to watch son Henry graduate from high school in Pacific Palisades, California, earlier in June.

In addition to the many hats she wears professionally, Klum has gained fame for her passion for Halloween and the lavish ensembles she wears every year to celebrate the occasion.

Some of the costumes she has worn over the years include a giant worm; Jessica Rabbit; the werewolf from Michael Jackson’s Thriller video; a huge robot; and an exhibition in which she was accompanied by five lookalikes, all dressed in the same ensemble she was in.