So much for the tradition of not being with the bride the night before the (alleged) wedding.
The musician joined his fiancée Nancy Shevell and her family at the Liberal Jewish Synagogue in St. John's Wood, London for the Breaking of the Fast service, according to British reports..
And although officially announcing their intent to marry earlier in the month, the duo remained coy about the big day.
When the lovebirds left the service, photogs asked, "Are you looking forward to tomorrow?" to which McCartney inscrutably responded, "Good question. Thank you and good night."
Although staying mum on the deets of the day, it appears that this time around Paul is distancing himself from another $50 million wedding (ahem, Heather Mills).
Since Friday, vendors have been spotted at the star's London pad delivering dozens of yellow roses, ice and sound equipment.
The simple looking prep continued well into Saturday, when a gazebo was erected outside the home along with the delivery of only 135 chairs, 10 tables and an easel.
McCartney popped the question back in April over a romantic candlelit dinner with a reported $650,000 ring—but hey, all you really need is love, right?!
It will be Paul's third marriage and Shevell's second. Congrats in advance you crazy kids!