It's a family affair! Lleyton Hewitt and his wife Bec are all smiles as they are joined by their children at the opening night of Annie in Sydney

 Lleyton Hewitt brought the brood to the theatre for a fun family night out. 

The former Aussie tennis player, 44, attended the Annie premiere on Thursday with his wife and former Home and Away star Bec, 41, along with their two children Ava, 14, and Cruz, 16.

The Hewitts gleamed as they posed on the red carpet, looking every bit the happy family as they arrived to see the hit musical at the Capital Theatre in Sydney.

Lleyton kept it casual in a black quarter-zip shirt, which he paired with green chinos for the smart occasion.

His wife Bec looked chic in a striped cropped and collared shirt, paired with grey relaxed pants.

Ava was also very on-trend in a plaid printed mini dress with a pleated skirt and collared neckline.

Lleyton Hewitt and his wife Bec were all smiles as they were joined by their children at the opening night of Annie in Sydney on Thursday...

The Hewitts gleamed as they posed on the red carpet, looking every bit the happy family as they arrived to see the hit musical at the Capital Theatre...

Her brother, who made headlines at the beginning of the year for winning his first ever Australian Open match, donned a classic white tee and cargo pants combo as he towered over his parents. 

Also in attendance were The Block's Mitch Edwards and Mark McKie who came dolled up for the occasion. 

Mitch, 62, looked fabulous in a black bedazzled suit, accessorising with a pink pocket square and green gemmed replacement for a bowtie, with his signature wide framed glasses. 

His partner Mark, 63, wore a white blazer with black trousers and a black and white checkered waistcoat - with a hint of red in his chest pocket. 

Nikki Webster, 37, and her son Malachi McMah, 7, also turned heads on the red carpet in their co-ordinated ensembles.

The singer donned a dramatic black dress that hugged her curves with feathers, gems and a mermaid tail while  Malachi wore a smart red and black suit. 

Meanwhile, Samantha Jade, 37, put on a leggy display as she arrived to the star-studded event.

The Aussie singer showed off her trim pins in a short red coat, black stockings and a pair of black strappy heels, while wearing her hair down over her shoulders.

Also in attendance were The Block's Mitch Edwards and Mark McKie who came dolled up for the occasion...

Nikki Webster and her son Malachi McMah turned heads on the red carpet in their co-ordinated ensembles...

Samantha Jade put on a leggy display as she arrived at the star-studded event...

Mark Vincent cleaned up nice for the premiere, donning a suave grey double-breasted suit..

Mark Vincent, 31, also cleaned up nice for the premiere, donning a suave grey double-breasted suit.

The 2009 Australia's Got Talent winner oozed charm in a black unbuttoned shirt and ankle boots, along with a slicked back hair do and light facial stubble.

Annie the Musical is currently on at the Capitol Theatre in Sydney and will be moving along to Melbourne's Princess Theatre in July and Brisbane's Lyric Theatre in December. 

The cast includes Anthony Warlow as 'Daddy' Warbucks, Debora Krizak as the infamous Miss Hannigan, Mackenzie Dunn as Lily St. Regis, Keanu Gonzalez as Daniel 'Rooster' Hannigan, Amanda Lea LaVergne as Grace Farrell and Greg Page as President FDR.

The titular character Annie will be played by Beatrix Alder, Matilda Casey, Dakota Chanel and Stephanie McNamara...