Her ability to defy the years has made her the envy of women everywhere. 

And Jennifer Lopez showcased her youthful appearance once again in two flirty and feminine outfits on Sunday as the 45-year-old singer enjoyed some downtime in Miami, Florida.

The Boy Next Door actress flaunted her washboard stomach in a white crop top as she spent the day shopping with a female friend, before later joining her toyboy beau Casper Smart, 28, for a spot of retail therapy

Jennifer Lopez is giving us plenty of summer style inspiration and this is just the kind of look to take our minds off the unseasonal rain...

If there's ever a time to wear a mini skirt and

show off your pins then this is it and we think J-Lo may just have found the perfect piece. In a pastel blue print with an elasticated waistband and cute frill layers it's ideal for embracing the sun. When it finally reappears that is.

It's by Twelfth Street by Cynthia Vincent and is flirty and feminine and has made it to the top of our wishlist. It's actually an exclusive design for stateside store Intermix but thanks to the power of the internet it can be yours at the click of the mouse.

Click (right) to buy it now and style with ankle boots and a cropped tee for a dressed down day. If you love the look but not the price then you can find similar minis in our edit below. With skirts by H&M and Paul & Joe Sister there's a style for every budget.

The On The Floor hitmaker was sure to turn heads in her first ab-flashing design, which she paired with a patterned blue mini-skirt and skyscraper cream wedges, as she hit the shops in the sun-soaked location.

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In true celebrity style, Jennifer completely changed her outfit for the evening out in a sheer lace play-suit.

The actress ensured the cream design demonstrated her taut waist by teaming it with a chunky brown belt and gave her legs some added height in a pair of turquoise blue wedged espadrilles. 

Ditching her earlier red lip, the star kept her make-up simple and wore her hair in a chic low ponytail.

Both looks were a lot more feminine than the style Jennifer was spotted sporting on set of her new TV series, Shades of Blue, on Friday.

The Latino beauty ditched her typically glamorous style for a pair of black palazzo pants and a loose-fitting white blouse as she filmed scenes in a parking lot in Queens, New York. 

Jennifer has been hard at work filming the upcoming NBC drama, which sees her star as Detective Harlee McCord in the 13-episode series alongside Ray (Bill Wozniak) and Drea (Detective Shirley Nazario).

Recruited to work undercover as part of the FBI's internal anti-corruption task force, Harlee finds herself torn as she works against her fellow officers, while also juggling the never-ending demands of motherhood.