By Grace Gavilanes
Apr 24, 2015 @ 7:30 am
Terry Fincher/Express/Getty Images

Get ready to sing your best rendition of Happy Birthday to Barbra Streisand, who turns 73 today. After launching her ultra-successful music career in the '60s, the chanteuse seamlessly transitioned into film, scoring countless iconic and award-winning roles over the decades.

PHOTOS: Barbra Streisand's Standout Hair Moments

Last year, Streisand made her Instagram debut, and she continues to deliver remarkable snapshots that we can't help but double-tap. The Grammy winner's account is packed with retro gems, from signing her first-ever Columbia Records contract to appearing on The Judy Garland Show in 1963. In addition to keeping her music on an endless loop on Spotify today, we're celebrating Babs's 73rd birthday with a look back at her most memorable throwback 'grams to date.

PHOTOS: Barbra Streisand's Changing Looks Through the Years