According to a newspaper, the music mogul will be flying Sinitta, her two children and her partner out to Barbados later this month to celebrate the festive season, while Lauren has decided to remain in the States to be with her 7-year-old son Adam from her previous marriage.
X Factor boss Simon was rumoured to have fallen out with his ex Sinitta earlier this year following a newspaper interview she gave about their relationship, although he never confirmed the speculation.
Whatever happened, it's clear the two are still firm friends and Lauren is reportedly happy for Simon to spend the festive period abroad with a group of pals including Sinitta.
A source told the Mirror: "Simon has forgiven Sinitta. She has always been a huge part of his life and he would never want to ruin their friendship.
"Lauren also respects how important Sinitta is to Simon They will spend the day aboard his yacht, The Slipstream, which will cruise around Barbados."
Simon, 54, confirmed that Lauren was expecting his first child back in August.
The news came as a shock to Sinitta, who has previously revealed that Simon never wanted to have children while they were dating.
But speaking in September, Sinitta appeared to have come to terms with the news, claiming that her former lover is happy with Lauren and that the 36-year-old American is "the one" for him.
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