Whitney Houston, who passed away on Saturday, received a touching tribute from Jennifer Hudson, who sang I will always love you at the Grammys on Sunday night. The song, which touched millions of hearts, became a showstopper and topped Google's trend list on Monday.

Houston was found dead at the Beverly Hills Hotel at age of 48, leaving countless fans in shock and deep sadness. Jennifer Hudson sang Houston's hit-song I Will Always Love You (from the movie The Bodyguard) at the Grammy Awards Sunday, paying tribute to the 48-year-old legend.

According to CNN, Hudson was obviously holding back her tears during her performance, but some reports claimed that she had a difficult time at the rehearsal.

She was having a hard time getting through the song, especially on the second run-through, a source told the Hollywood Reporter. But Sunday's performance was perfect.

At the end of the performance, Hudson said, Whitney, we will always love you.

The video of Hudson's performance has been posted on YouTube. Click the video to relive the touching moment.