Katharine McPhee says husband David Foster is 'annoyed' that she announce son's name

Katherine McPhee has returned to the "American Idol" stage. The 37-year-old singer-actress was the runner-up of the singing competition's fifth season, losing to Taylor Hicks.

Katharine McPhee is opening up about motherhood.

Alyssa Wray absolutely nailed her performances on Sunday’s “American Idol”.

Sunday’s “American Idol” was jam packed with big performances, memorable moments and celeb guests. However, it was Katharine McPhee’s duet with one of the show’s frontrunners that stole the spotlight.

Katharine McPhee is back on the American Idol stage!

was jam packed with big performances, memorable moments and celeb guests.

Katharine McPhee continues to bask in the glory of her post-baby body. The singer-songwriter, 37, who welcomed her first child, son Rennie David, with husband David Foster, in late February, showed off her newly-acquired curves in a selfie snap shared to her Instagram Story on April 1 as she modeled a one-piece tie-dye swimsuit created by her stepdaughter, Sara Foster, 40.

Round two! Two days after showing her postpartum bikini body, Katharine McPhee rocked a one-piece bathing suit.

 Katharine McPhee  is one happy mama! The 37-year-old recently gave birth to her and  David Foster ’s baby boy only five weeks ago and McPhee is glowing and looks fabulous. A post shared by Katharine McPhee Foster (@katharinefoster)On Tuesday, the former American Idol singer posted to her Instagram stories a photo of herself in the mirror posing in a brown one-shoulder, high-waisted bikini with matching sunglasses.

Bikini body! Katharine McPhee sported a bathing suit five weeks after giving birth to her and David Foster’s son, Rennie.

Keeping it real! Katharine McPhee gave her 3-week-old son, Rennie, a shout-out for how he’s changed her body.

David Foster had some feelings after Katharine McPhee shared their newborn son's name. The same week that McPhee revealed she and her husband named their baby boy Rennie David Foster, the Country Comfort star shared why doing so «annoyed» her husband.McPhee, who gave birth in February, spilled the beans while on the show, after host Hoda Kotb asked her about her son's moniker.«My husband was kind of annoyed.

Katharine McPhee, 36, admitted husband David Foster, 71, wasn’t so thrilled she spilled tea on their newborn son’s name! “You know, my husband was kind of annoyed…I’m in trouble, but hopefully my husband won’t be too mad at me!” the American Idolalum revealed on SiriusXM’s The Jess Cagle Show on Thursday, Mar. 18.

 Katharine McPhee  was excited to share the name of her first born child, Rennie David Foster, with the world. Her husband, David Foster, on the other hand, wasn’t as happy with her decision.

Katharine McPhee admitted her husband David Foster wasn’t best pleased when she revealed their baby’s name on “Today With Hoda and Jenna” this week.

Whoops! Katharine McPhee decided to share her 3-week-old son Rennie’s name on Wednesday, March 17 — and husband David Foster was not happy about it.

Katharine McPhee is positively glowing! Three weeks after the American Idolalum, 36, welcomed her first child with husband David Foster, 71, she took to Instagram to share a photo of herself in a green silk dress for St Patrick’s Day. Katharine simply captioned the post with a four leaf clover, as she rocked the long-sleeved satin midi dress, which featured a high slit up one leg. The brunette beauty paired the ‘fit with nude pumps and a matching, green face mask.

Going green! Katharine McPhee showed her postpartum progress while celebrating St. Patrick’s Day on Wednesday, March 17.