The reality star arrived in London this afternoon (10 March) for the bash which was being held at The Grosvenor House Hotel.
Adding a splash of colour for the day's festivities, Bobby teamed his red blazer with a crisp white shirt, coated leather-look trousers and grey suede loafers.
Bobby was all smiles as he was snapped making his way through the revolving doors.
With a bright start to the morning, Bobby tweeted to his followers earlier today: "Loving the sunshine in London this morning.. #beaut."
And, Bobby wasn't the only reality star to inject some colour, as his co-star Chloe Sims stunned in an electric blue trouser suit as she arrived with on-off boyfriend Elliott Wright.
During last Sunday's episode of TOWIE, Bobby turned heads in a pair of blue heels as he partied with his co-stars for International Women's Day.
Bobby took part in a stiletto dance class with the girls before partying later on in his heels - all for a good deed!
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