PHILADELPHIA (CBS) – Some say the bond between siblings is the strongest there is, and that just so happens to be the case for two sisters who gave birth Wednesday morning at the Hospital of the University of Pennsylvania.

According to Penn Medicine, the sisters, who are one year apart in age, gave birth this morning just fifteen minutes apart.

The first baby girl was born at 8:15 a.m. and the second at 8:30 a.m.

Coincidentally, both sisters already have two-year-old children.

Both babies are healthy.

(credit: Thomas Gardiner/CBS 3)

(credit: Thomas Gardiner/CBS 3)

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