Standards in women’s tennis fashion are on an all-time high, pushing brands to work day and night to stay competitive and deliver always-striking and ever more functional outfits. The 2015 season was highly prolific in terms of women’s tennis apparel and our fashion contributor Marija Zivlak of Women’s Tennis Blog narrowed down the selection of clothes to those that made the greatest impact in the season behind us.

Serena Williams had a number of memorable outfits in 2015 and even Nike, Inc. President and CEO Mark Parker joined the design process for her US Open range of clothes entitled the Greatness Collection. The item that, however, beats all else is this yellow and pink eye-catching and powerful tunic that absolutely stole the show during the Australian Open and in which the American started her quest for the Calendar Slam by claiming the Melbourne title. Everyone was talking about this vibrant outfit with huge back cutout that goes all the way to the waist and even now, ten months later, it is still alive in our memory.

Lotto pushed the boundaries when it comes to what qualifies for sports clothing, going sexy and disco for most Agnieszka Radwanska’s dresses this year.

From the Pole’s provocative lace statement piece in many different colors (navy, red, blue, and black) and even more extraordinary shiny silver dress, to the very daring printed metallic dress with ruffled hem and thin criss-cross straps.

Prints are Venus Williams’ specialty and without hesitation the EleVen’s Ndebele pattern is the 2015 favorite. Inspired by the Ndebele South African tribe, this colorful zig-zag print is a wonderful marriage of lively colors and geometry, while dark side colorblocks provide the always-welcome slimming effect.

Even though Yohji Yamamoto’s Y-3 collection for the French Open campaigns of adidas’ top athletes was unarguably wonderful refreshment with its combination of powerful blacks and Hawaiian floral prints, looking back at the 2015 season, the brand’s spring and summer adizero groups of clothes edge the Japanese designer.

Adizero is the absolute perfect mix of modern style and sports design with ultimate use of technological advancements. The Adizero items a great choice for all those looking for one solid outfit that will be both trendy and functional for the long time to come. Be it in night flash with orange accents, or in flash red with vibrant green details, these ensembles get five stars in every aspect.

Garbiñe Muguruza always looked stylish during her stellar 2015 rise to number three in the WTA rankings, wearing a variety of adidas separates designed by Stella McCartney. From the peach romantic florals in the spring, to flirtatious laser cut open mesh skirt during the run to the Wimbledon final, and finally to the closing of the big season in the winter colorblock tank with a nice half-ellipse back cutout and dark grey paneled skirt.

Finally, Maria Sharapova deserves an honorable mention, even though some of her best outfits were barely exposed this year, such as the Roland Garros dress which was constantly covered by striped long-sleeve shirt and her black and white US Open dress that she wore only briefly in Wuhan. The Wimbledon dress is characterized by strategically-placed contrasting triangles that add a subtle element of visual interest, while also ensuring a figure-flattering dimension, and Sharapova looked wonderful in it, going all the way to the semifinals.