Uncle Rush and his "Baywatch" beauty had dinner Thursday night at the Waldorf Astoria rooftop in Beverly Hills, the first time they've been seen publicly together.
According to a witness at the Waldorf Astoria, the two lovebirds were kissing at the valet after dinner before leaving in separate cars.
We're told they've actually been out a few times, just on the down low, including a trip for a Cryogenic session.
The 49-year-old Def Jam mogul, who's worth $340 million, got divorced from Kimora Lee Simmons in 2009. D'Errico split with Nikki Sixx in 2007 after nine years of marriage.
If you follow either of the two on social media, perhaps the hookup wasn't much of a surprise. Simmons recently commented on one of D'Errico's Instagram pictures ... and no doubt slid into her DMs like a boss.