It looks like Jennifer Aniston's friends and fans aren't the only ones who have been disappointed with the star not sporting a baby bump just yet. Apparently the Hollywood actress's ailing father John Aniston has been patiently waiting for a grandchild as well.

Jennifer Aniston Flaunts Her Bikini Body In Mexico With Justin Theroux

Jennifer's father, who will be turning 81 this year, is said to be very anxious about seeing his only daughter pregnant as he would like to become a grandfather soon.

"Jen's dad John longs for grandchildren and knows that is he doesn't hurry and get hitched, he might not live long enough to see her kids," a source tells the National Enquirer. "John knows he's not getting any younger and he wants to meet his first grandchild."

Is Jennifer Aniston Jealous Of Angelina Jolie Again?

The source also notes that the elder Aniston and former daytime soap actor has given his seal of approval to Jen's fiancé, Justin Theroux, and would like to see them start a family together soon before her biological clock stops ticking. At his age, he's afraid that he won't have enough time to enjoy his future grandchildren and wants to spend quality time with them while he is still in good health.

"Although John hasn't always loved the guys Jen dated, he's given his stamp of approval to Justin," adds the source.

In addition, Jennifer's mother, Nancy Dow, is also anxious to see her daughter get pregnant. The 77-year-old suffered a stroke in September 2011 and is said to be hoping to see Jennifer pregnant soon so they can continue to heal their relationship and bond with a new baby in their family.

Jennifer is allegedly set to marry Theroux in a small, intimate ceremony this summer.

Tags: Jennifer Aniston jennifer aniston justin theroux Justin Theroux