It was released on January 18, 1991, through A&M Records and topped the US Billboard Hot 100 chart for two consecutive weeks in April 1991, becoming the first in a string of hits from Heart in Motion.

In the Heart in Motion booklet are the words: This song is dedicated to Millie, whose six-week-old face was my inspiration.

[4][5] The song consists of three verses that are interrupted by a bridge, "'Stop for a minute, baby I'm so glad you're mine".

Lyrically, the song praises that special someone and expresses love that started since the day her heart was "put in motion".

The chorus is the source of the album's title: "And ever since the day you put my heart in motion, baby I realized that there's just no gettin' over you".

In the United States, "Baby Baby" became Grant's second number-one hit on the pop charts and her first as a solo artist, topping the Billboard Hot 100 (replacing Wilson Phillips' "You're in Love" from the top spot) and Adult Contemporary charts for two and three weeks, respectively.

It also made Grant the first Christian pop singer to have a number-one single in the United States.

[10] Its beginning features Grant receiving attention from other men, and her staying loyal to her lover, portrayed by model Jme Stein (who also appeared in her other video from that album "Good for Me").

At some point Stein is seen singing along with Grant and at the end lip-syncing to the words "Baby I'm so glad".

It was hardly typical video fare, with no special effects or distant locales; all it offered was Grant and a good-looking guy cavorting and acting pretty as she lip-synced to the song.

[citation needed] It was also briefly referenced in the 30 Rock episode "Queen of Jordan" where it was derided as "white nonsense".

[citation needed] Grant recorded an updated version of the song with pop artist Tori Kelly.