Jenner was surrounded by 15 of his closest friends at Aventine Trattoria in Hollywood for his birthday Wednesday night

Credit: Denise Truscello/WireImage

It’s going to be a big year for Brody Jenner.

On Wednesday, the deejay and reality star celebrated his 33rd birthday with his closest friends and fiancée Kaitlynn Carter.

After arriving with a group of 15 at Italian hotspot Aventine Trattoria in Hollywood around 9:30 p.m., Jenner and his friends dug into gnocchi, pizzas and ravioli while sipping on cocktails.

Kaitlynn and Brody were super affectionate and looked more in love than ever,” says a source. Midway into the meal, the birthday boy was toasted by his loved ones.

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After wrapping up dinner, the group headed over to hotspot Warwick (co-owned by JT Torregiani and Sylvain Bitton), where they took over two tables next to the deejay booth.

Jenner was presented with a birthday cake around midnight that came complete with sparklers and champagne.

“Everyone sang ‘Happy Birthday,’ and Kaitlynn even gave him a big kiss after the sparklers went out,” says the source.