Meryl Streep Shows Up For Debbie & Carrie's Private Service

Debbie Reynolds and Carrie Fisher are being privately honored by family and friends Thursday ... and the service includes a ton of flowers and Meryl Streep.

A massive shipment of white roses and tiger lilies were delivered earlier Thursday to Debbie's home in Bev Hills, where Carrie also lived right next door on the same compound.

Unclear exactly how many flowers were ordered, but you know it's a lot when they're bringing 'em in by the truckload.

As we previously reported, the Fisher family has also asked Meryl to give the eulogy at the public memorial.

Looks like Gary, Carrie's beloved dog, is also getting pampered for the intimate service.