Lara Trump has been showcasing her toned physique as she spent the weekend with her family and girl gang group of sisters-in-law - just days before America celebrates its 250th anniversary.

On Tuesday, her sister-in-law, Tiffany Trump, took to Instagram to share snaps from a family weekend to celebrate Father's Day at Camp David. 

In some of the photos, it looks like the Trump ladies took on the shooting range together, as she posed for a selfie with Lara in one picture.

Mom-of-two Lara, 43, wore a white tank top in the photo alongside Tiffany, showing off her arms as she put her hands in a peace sign and held up the camera.

Her muscles looked extremely toned as she completed her look with a black baseball hat and crystal-adorned cross necklace.

In another photo posted by Tiffany, she and Lara posed alongside Ivanka and Bettina, the newest member of their family, as they enjoyed time together.

They were all smiles as they posed next to one another, with Bettina and Ivanka even wearing nearly coordinating striped outfits.

Other snaps posted in the carousel included Tiffany having a go at shooting, while another showed her smiling alongside husband Michael Boulos, and their one-year-old son, Alexander, who was ready for the weekend in a pair of white Vans and a green-and-white striped jersey shirt.

Tiffany also posed next to dad President Donald Trump as he flashed his signature thumbs-up pose, while another saw her smiling ear-to-ear alongside older sister Ivanka.

'Cabin days, campfire nights, and memories made in the woods,' Tiffany wrote in the caption.

In the comments section, her followers seemed to love getting snaps of their family time, but some couldn't help but notice Lara's absolutely ripped arms.

'OK, Lara has muscles where I didn't even know we had those on our body,' one person wrote, accompanied by a crying-laughing emoji.

Another typed, 'Look at those guns on Lara, holy crap!'

It comes after she shocked fans with her eye-popping muscle definition earlier this week as she posed in a red crop top from her clothing line on Instagram. 

To celebrate Father's Day on June 21, much of their family traveled up to Camp David in Maryland to spend time together.

The 125-acre country retreat for the President is situated in the wooded hills of Catoctin Mountain Park in Frederick County. 

However, there was one family member who was missing - and that was Ivanka's husband, Jared Kushner.

Just a few days after the celebration, Ivanka took to her Instagram story to share that her other half had to 'sacrifice' the day. 

'Last Sunday, we gathered at Camp David with my dad, my siblings, our children and their cousins,' she penned. 'Grateful for another Father's Day together.'

Turning her attention to her husband of 16 years, she continued: 'Jared couldn't be with us. But his absence was one born on purpose. And we felt his presence all the same.'

Ivanka added: 'The older I get, the more I realize that family is built in both the extraordinary moments and the ordinary ones: a walk, a laugh, a story shared around the dinner table.

'These become the memories our children carry forward. Feeling especially grateful for the fathers who love, lead, and serve through both presence and sacrifice.'

Despite Kushner's absence, it looked like Ivanka was able to enjoy some precious quality time with her loved ones.

In one snap, she posed with her lookalike daughter, Arabella, 14, and her two sons, Joseph, 12, and Theodore, ten, outside the Camp David sign.

Another photo included the same sign and saw Ivanka and her younger brother Eric Trump, 42, in the saddles of their respective horses.

It seems that the Trumps have had a lot of family time together as of late, as Don Jr and Bettina recently married at a private Bahamas wedding.

In May, the couple legally tied the knot in a Palm Beach ceremony but followed it up with a sun-soaked event limited to their closest friends and relatives.

More than 40 of their loved ones attended their luxurious Little Pipe Cay celebration, which included top-secret preparations and planning to keep the event as private as possible on the isolated paradise island.