Beyoncé's mother Tina Knowles appeared on Good Morning NYC to talk about her affordable post 50 fashion line -- Miss Tina, available in regular and plus sizes at Wal-Mart nationwide.

"Miss Tina is a line inspired by me needing to find clothes," she said. "After 50, you want a little room in the shoulders and just clothes that really fit well. I joke all the time that I am a grandmother, but I don't want to look like a grandmother."

The grandmother of two (for now) -- to Beyoncé's newborn daughter Blue Ivy and to Solange's seven-year-old son Juelz -- was also excited to share how the Knowles' women would be celebrating Beyoncé's first Mother's Day. Check out the video to hear about their plans, and enjoy our celebrity grandparents slideshow below.

Jim Carrey
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Actor Jim Carrey, 50, became a grandfather at the age of 47 when daughter Jane and her husband had their son, Jackson Riley Santana. On the day his grandson was born, Carrey tweeted a photo of the newborn, adding: "Jackson Riley Santana, My Grandson, Born today! This is what 7lbs.11oz. of Calfornia dynomite looks like!"
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