Ashlee Simpson rocks head-to-toe black ensemble with $4,500 Fendi bag to work up a sweat in the gym 

She's a devout follower of trainer to the stars Tracy Anderson's method.

And Ashlee Simpson was paying yet another visit to Gwyneth Paltrow's BFF's exercise studios in Los Angeles on Tuesday, looking ready to work up a sweat.

The 31-year-old singer - who has nine-month-old daughter Jagger Snow with her husband Evan Ross - was rocking an all-black sportswear look, adding a designer edge to the ensemble with a $4,500 Fendi handbag.

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Sporty style: Ashlee Simpson was ready for action as she arrived at Tracy Anderson's  studios in Los Angeles on Tuesday 

Sporty style: Ashlee Simpson was ready for action as she arrived at Tracy Anderson's studios in Los Angeles on Tuesday 

Ashlee looked ready for action in her cropped leggings and zip-up fleece top, set off with burgundy trainers.

The pop star pulled her hair back into a high ponytail and shielded her eyes behind a pair of designer shades.

She looked the picture of health, showing off her toned legs in her form-fitting leggings.

Fighting fit: The 31-year-old singer looked sensational in a pair of black cropped leggings and a zip-up fleece as she prepared for her workout 

Fighting fit: The 31-year-old singer looked sensational in a pair of black cropped leggings and a zip-up fleece as she prepared for her workout 

Get ready to run in Ashlee's Asics trainers

Ashlee's Simpson is a bit of a Hollywood gym bunny and is regularly seen heading out for her fitness sessions at her local gym. A fan of the Tracy Anderson regimes, it's no wonder that Ashlee wants to look stylish while she commits to those grueling workouts.

The star donned an all-black gym outfit this week, accessorizing with her Fendi bag and a pair of plum-colored trainers. Everyone knows a good pair of trainers are essential when following a strict exercise routine and Ashlee loves her Asics styles, having been seen in various pairs from the brand over the last little while.

This week she stepped out in the Gel Kayano running shoe style and wore them in a gorgeous plum shade. We've also seen Ashlee sport these exact trainers in black so she's definitely a fan! Click right to buy them on sale at 6 p.m.

Alternatively, shop more plum and purple-colored trainers in the edit below.

* PRICES MAY NOT BE AS ADVERTISED

Ashlee has been a disciple of Tracy Anderson's method for years and even followed the exercise plan - favoured by the likes of Jennifer Lopez and Madonna - while pregnant.

The star has been enjoying every minute of parenthood so far as she and Evan, the son of Motown legend Diana Ross, focus on raising their daughter.

She told AOL: 'In general, your second child is way more laid back. 

Designer touch: The star went high end when it came to her accessories, toting a $4,500 Fendi handbag

Designer touch: The star went high end when it came to her accessories, toting a $4,500 Fendi handbag

'I was pretty laid back with [my first child] Bronx, but this time you definitely know what you're getting into it.

The Boyfriend hitmaker also confessed that her seven-year-old son Bronx Mowgli - who she has with her ex-husband, rocker Pete Wentz - has been a great help with his little sister.

She said: 'He can calm her down and tell her it's OK, entertain her, and dance with her. He's a really good big brother.'

Family bliss: Ashley and her husband Evan welcomed daughter Jagger Snow eight months ago

Family bliss: Ashley and her husband Evan welcomed daughter Jagger Snow eight months ago

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