The 42-year-old Jennifer lopez looked slick in her high-neck metallic mini dress and killer skyscraper heels

Jennifer Lopez engaged in a PDA with Casper Smart - a public display of aggression.

The American Idol judge, 42, and her toyboy lover, 25, were spied in a convertible ahead of her appearance on the show, with the couple allegedly said to be bickering.

The Love Don't Cost A Thing singer clearly didn't look too happy compared to their usual scenes of affection, raising her eyebrows as frown lines surfaced above the rim of her sunglasses.

  However, whatever the drama, the show obviously needed to go on, with J-Lo later looking sensational in a paillette dress for her appearance that evening on the talent show.

The Wedding Planner actress ditched her daytime attire for the stunning sequin cocktail frock with a bold white high-neck panel which bled into a metallic middle and then a black mini skirt.

Her hair was pinned back elegantly in true Hollywood glamour, to show off her pair of hoop earrings.

Whether or not Lopez and her post-marriage rebound can last the distance, the mother-of-two has made no secret about being keen to have more children.

During a press conference for new film What To Expect When You're Expecting, she said: 'It would be a blessing for me. But right now I'm focused on doing it right with those two, Max and Emme.'

She also hinted towards adoption, adding: 'Before the movie, I never really thought about adoption at all and I was so focused on having my own and it took me awhile to have my own.

'But after the film and during the making of the film, I held those two little Ethiopian twins and you fall in love instantly... It really occurred to me, I can see how somebody can do this.'

J-Lo is said to have embarked on her romance with Casper last November, following her split after seven years of marriage with Marc Anthony - the father of her twins - in July 2011.

Zoe Saldana In Elie Saab Couture – Cosmopolitan For Latinas’ Premiere Issue Party.

Despite being notably M.I.A at Monday night’s Met Gala, Zoe Saldana was in New York City attending the Cosmopolitan for Latina’s Premiere Issue Party last night.

The actress looked beautiful wearing an Elie Saab Couture dress.

Her lavender dress with a sheer embellished neckline and tiered skirt is such an adorable look. It’s always a delight to see Zoe on the red carpet.

Zoe accessorized with a Bottega Veneta clutch which closely matched her dress and silver-and-blush Brian Atwood ‘Claudia Bis’ pumps with an embellished heel.

Glossy waves, fringed Irit Design earrings and rings completed the look.

                  Karolina Kurkova In Rachel Zoe – 2012 Met Gala.

Karolina Kurkova was a certified knock out on the red carpet at the 2012 Met Gala held at the Metropolitan Museum of Art in New York City this evening.

The supermodel attended the event with Rachel Zoe, who designed this breathtaking creation.

Her custom long sleeve rose gold sequinned gown with open back and train has me borrowing Rachel’s famous catch phrase…”I DIE”, because I think I just did.

This is amazing. Supermodel amazing, Iman amazing, and no one does amazing quite like Iman, so this is high praise, indeed.

Karolina teamed her spectacular gown with a matching turban and a gold clutch.

This look just leap-frogged Elizabeth Banks for my best dressed of the night so far.

                                    HAPPY BIRTHDAY TO YOU.

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