Nicola - I say go. Wear a good Victoria's Secret push-up bra and a tight top that shows off that cleavage. Wear the sexiest perfume you can find (check out Indecence by Givenchy, all the guys seem to comment when I wear that - H and S14 picked it out for me). Wear a thong and make sure H gets a glimpse (JUST a glimpse - no skanky wearing it 5 inches above your pants!).
Be relaxed and funny. Smile at the other men there (nothing gets your H's attention like seeing other men's eyes follow you as you cross the room). BE the goddess you are. Radiate self-confidence. Stand tall. Let some "accidental" touching happen - your thigh against his, brushing something out of his hair, reaching across him, stumbling and "needing" to grab his arm.