This is some heart-warming stuff, folks. You've been warned.

The itty-bitty bundle of joy known as Montana Tessa Siebel Newsom made her first public appearance over the weekend. The 100th anniversary of the Geary Theater, which houses the American Conservatory Theater, brought out Gavin Newsom, Jennifer Siebel and their DNA mash-up, Montana, who looks nothing short of adorable.

According to City Insider, Monty was sporting a pink coat and pants and sucking on pacifier.

If you find yourself enveloped with baby fever, KTVU has a slide show of little Montana if needed.