Marie Osmond is thrilled after the birth of her second grandchild.

The 55-year-old singer's daughter Rachael Krueger welcomed her own little girl, Rocket, on August 14, and Marie is obsessed with the tot.

She told PEOPLE magazine: ''Little Rocket is such a gift! I can't stop looking at her - she's beautiful! She looks like her mommy! I could not be happier for Rachael, Gabriel and their growing family.''

Rocket was born in Nevada and weighed 6lbs 1oz.

Costume designer Rachel, 26, married fashion designer Gabriel Krueger in December 2012 - 10 days after they got engaged.

Marie - whose son Stephen Craig and his wife Claire welcomed their son Stephen James Craig in 2013 - calls herself a ''Glamma'', a glamorous grandmother.

The performer - who shot to fame as part of her family's singing group The Osmonds - said: ''I'm a Glamma again - two times grandma, two times as glamorous! Nine years ago, I was 50 pounds heavier. Today, I've never felt better and have so much energy to keep [up] with my shows, my family and now my two beautiful grandchildren. I'm a lucky woman!''