Smitten Brooklyn Beckham treats his older girlfriend Chloe Moretz to a birthday lunch in Los Angeles (Details, pics)

And Brooklyn Beckham looked more loved-up than ever before with his girlfriend Chloe Moretz on Saturday as he treated her to a birthday lunch in West Hollywood, California. The pair have been in an on/off relationship since 2014, but have recently become more open in showcasing their evolving bond.

The eldest son of David and Victoria Beckham, 18, appeared in high spirits as he walked hand-in-hand with the birthday girl, 21, who donned a star tiara for her special day.

Sporting a light brown bomber jacket, the handsome male looked every inch the trendsetter as he paired his outerwear with ankle grazer trousers, a rock-inspired tee and a sophisticated baker boy hat.

Brooklyn proved to maintain his love for photography as he wore a camera in a pouch around his torso. The teen held onto the hands of American actress Chloe, who ensured all eyes were on her in her denim ensemble, which featured a floral embellished jacket with a pair of straight-leg jeans.

The Days of Summer star tied in her outfit with a chic Prada purse, gold lace-up boots and a star tiara - making sure onlookers were aware of her big day. The stunning blonde opted for neutral toned makeup as she enhanced her features with lashings of mascara and a hint of rose-tone blush.

Her mid-length tresses were styled into loosely tousled curls as she beamed with delight on her birthday. The pair started celebrations on the eve on her birthday, which Chloe shared on her Instagram - which boasts a following of 14 million.

The Diary of A Wimpy Kid star posted sweet photos to her Instagram stories cuddled up next to her beau, with the caption 'Turning 21 with the boy'. Later in the evening she showed off a flickering candle beside her birthday dessert as Beckham peered on.

This comes after the Westminster native denied a previous relationship with Celebs Go Dating Star Tallia Storm.

The reality star confessed it felt like Brooklyn had dumped her again but this time in front his 10,800,000 Instagram followers on Wednesday.

'We dislike each other,' she divulged to Mail. 'I couldn't be more angry. It's like he's dumped me again! You dump me once, three years ago, and now you dump me again!

'Why does he feel the need to do it again three years later? Why is he bringing it back up again. It's exhausting!' Tallia was left fuming when she watched Brooklyn's very public denial with the rest of his followers.

She explained: 'I saw the video last night – you can tell he’s so bothered. So yeah, he was cooler than me back then. Now that I’m finally doing well, it’s an exciting time for me as I’m on television and I’m looking for love again, and he is bitter about it.

Tallia continued: 'This proves he is just a boy and I am looking to date a man. I found it really hard to open up after what happened.