Her season has already got off to a good start with three wins already.

However, when Serena Williams isn’t on the court, she likes to indulge her other passion for fashion.

The World’s No.1 was spotted posing up a storm in a high-waisted, monochrome bikini for a photoshoot on Miami Beach, Florida on Monday.

Posing up a storm: Serena Williams shows off her monochrome bikini during a photoshoot in Miami Beach, Florida

Strong: The 31-year-old showed off her athletic physique as she posed on the beach

Wearing the high chequered and strip patterned bottoms and a black top, the 31-year-old looked like she was having fun posing on the beach.

She let her hair flow naturally around her shoulders, with her only jewellery being a ring and bulky gold earrings.

As she was requested by the photographer to pull sultry poses, it appeared some of the faces she was making were causing her to laugh.

Feel a bit silly: Serena pulls a sultry face before bursting into laughter

Bootylicious: Serena confidently strides along the sands

Work it for me! One photographers get down in the sand as he snaps away at the tennis superstar

Getting the right light: Serena was accompanied by a photographer and full crew on the cloudy day

For many of the shots, she lifted her left leg to define her impressive muscular legs.

Later on, she changed into a figure-hugging yellow mini-dress as she moved back from the beach to the greenery of the sandbacks.

She was also spotted wearing a stunning black maxi dress, which flattered her curves in all the right places.

Feeling zen: The 31-year-old enjoys a moment of peace as she closes her eyes during the shooot

Bootylicious: The tight bikini showcased Serena’s fabulous curves

Golden girl: Serena adjusts her heavy gold earrings

Although she seemed to be enjoying the shoot, Serena admitted she had lost her voice.

She tweeted: ‘Lost my voice. #williamsinvitational2013 I literally cannot speak. Maybe I will be tweeting more…’

Her shoot came a week after she beat Serbia’s Jelena Jankovic to the the Family Circle Cup  in Charleston, South Carolina.

The beach is your catwalk: It looked like the weather was pretty windy for the alfresco shoot

Curly girl: The tennis player let her hair flow naturally for a beachy style

How many photographers does it take to do a photoshoot? Serena was the centre of attention

However, her victory was not without some controversy with Serena and Jelena arguing during the game.

After Jelena broke serve twice, Serena shouted: ‘Honestly, you have a problem,’ later adding she wasn’t ready for the serves.

Following her win, Serena explained: ‘I wasn’t ready. I am the most respectful player, other than Venus. I am so respectful to my colleagues.’

Mellow yellow: Later in the shoot, Serena changed into a tight yellow patterned mini dress

Loving the sunshine: The sun finally came out for Serena

Work that pout: Serena’s shoot comes after she won the Family Circle Cup earlier this month

Alfresco: Serena posed amidst the trees and flowers for the natural shoot

On March 30, Serena also won the Sony Open in Miami, which came a month after she was forced to pull out of the Dubai Championships after hurting her back.

Serena withdrew just minutes before she was due to play Frenchwoman Marion Bartoli after injuring her lower back.

The tennis star is now the world’s oldest women’s No.1 since records began in 1975.

Back to black: Serena changed into a dramatic floor-length black maxi dress

We can see your bra! The intricate back of the dress revealed the star’s underwear

Shoeless: Serena soon slipped off her trainers to suit the classy dress