Kim Richards' Daughter Brooke is Pregnant, Late Ex-Husband Monty Brinson 'Was Able to Hear the News Before His

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Kim Richards
is going to be a grandma!

The daughter of the Real Housewives of Beverly Hills star, Brooke Wiederhorn, 30, shared an exciting Easter announcement on Sunday, revealing that she and her Fatburger heir husband Thayer, are expecting their first child together.

WATCH: Kim Richards Verbally Attacks Heidi Montag for Causing 'Trouble' on 'The Mother/Daughter Experiment'

"Happy Easter! Can't wait to meet our baby BOY!" she captioned a photo via Instagram of an Easter basket stuffed with blue baby toys.

“Kim is very much looking forward to becoming a grandmother- it’s a very exciting time. Brooke is about 3 months along," a source told ET." Monty (her father) was able to hear the news before his passing.  It’s definitely bittersweet, but the family is doing really well.”

Brooke's dad and Richards' ex-husband, Monty Brinson, died in late January after a long battle with lung cancer.

The family's exciting baby news follows a rough year for the 51-year-old reality star, who checked into rehab for the fourth time in 2015. Richards told ET during an exclusive interview that being healthy enough to see big family moments is very important to her.

WATCH: 9 Celebrity Babies Due in 2016

"I will be here to be a grandma," she said fighting back tears. "I will be here to watch my kids be married I will do that because I am healthy, I am strong and I am going to be here for all of that and my kids will trust me to watch my grand children and be there."

"I mean my daughter trust me to watch her little puppy, that's her child right now. You know?," she adds.

NEWS: 'RHOBH' Star Brandi Glanville Claims Kyle Richards Wasn't at Monty Brinson's Memorial

As Richards continues to work on herself, she is also trying to help heal the strained relationship she has with her sister and RHOBH co-star Kyle Richards.

"The hurt won't ever really go away," she shared with with Andy Cohen during a special episode of Watch What Happens Live! earlier this month. "She called and reached out to me and I wasn't ready. So I said to her, 'I have to put those things aside and if you want to move forward, that's what you need to do too.'"

Kim Richards Addresses Strained Relationship With Sister Kyle