Taylor Swift was determined to get a good workout in on Saturday, but anyone who saw her on the trail probably thought she needed a sandwich, not a sweat session.

The 23-year-old pop star showed off her slender arms and legs while hiking with friend Ed Sheeran and her bodyguard in Los Angeles’ Franklin Canyon.

Skinny hiker: Taylor Swift didn't look like she had a pound to lose when she hit the trail at Franklin Canyon in Los Angeles on Saturday

Swift, dressed in a black tank top and tiny shorts, admitted that she couldn’t afford to lose any more weight during the difficult journey.

Taylor Swift didn’t look like she needed to lose any weight when she hit the trail at Franklin Canyon in Los Angeles on Saturday.

Hiking buddy: Ed Sheeran kept a few steps behind his leader as he followed Taylor up the trail

Swift, who stands 5 feet 9 inches tall, confidently led the pack with her agile, long limbs, leaving her hiking partners in her wake.

With black Ray Ban sunglasses blocking the sun and her blonde hair pulled back in a ponytail, the You Belong To Me singer enjoyed an open-air sweat session in sunny California while the rest of the country shivered.

Beanpole: At 5'9", tall Taylor can keep up a fast pace when she walks

Hurry up! Swift encouraged her cohorts to walk faster so they didn't get left behind

Poor Ed, 22, trailed behind the country star, no doubt concerned that the unseasonably bright rays would burn his pale English skin.

Hiking buddy: Ed Sheeran kept a few steps behind his leader as he followed Taylor up the path.

Bony rib cage: The slender singer's low-cut workout top revealed how thin she has gotten as she took to the hills with her BFF

Work and play: Taylor and Ed have been performing together since 2012, and are close friends both on and off the stage

Despite his Adidas shorts and trainers, The A Team singer stood out in the wilderness with his ginger hair and armfuls of tattoos.

Her burly bodyguard trailed behind, carrying a small backpack containing the group’s provisions.

Taylor and Ed have become close friends since she contacted him after hearing his music on tour in Australia in 2012.

Hurry up! Swift encouraged her cohorts to walk faster so they wouldn’t be left behind.

Three's a crowd: The country singer's bodyguard carried a small backpack as she chatted with Sheeran

He has supported her on the Red tour, and they performed together at Madison Square Garden in New York as part of Ed’s sell-out tour of America on November 1.

In a recent interview with InStyle magazine, she stated that she believes it is possible to love others without feeling deeply connected. ‘Ed said something that really spoke to me. He says there are various types of love.

Taylor explained, “There’s physical attraction, mental attrition, and emotional attraction, as well as comfort and obsession.”

Bony rib cage: The slender singer’s low-cut workout top revealed how thin she has become as she took to the hills with her BFF.

Taylor and Ed have been performing together since 2012, and they’re close friends both on and off stage.

‘You need to have all of that in one person. You must respect them mentally, be physically attractive, and comfortable. You’re obsessed with them, but you also know they’ll stay,’ she explained. “I’ve never had that in one person.”

Taylor’s fast friendship is a welcome change from her more tumultuous romantic relationships with Joe Jonas, Harry Styles, John Mayer, and Conor Kennedy.

Swift has admitted that men are ‘inspiration on a plate’, and many of her songs are said to be about famous ex-boyfriends.

The album Red, which includes the hit song We Are Never Ever Getting Back Together, is widely assumed to be about ex-beau Jake Gyllenhaal.

Three’s a crowd! The country singer’s bodyguard carried a small backpack as she spoke with Sheeran.