Sen. Tammy Duckworth Ladda (Tammy) Tammy DuckworthMcConnell focuses on confirming judicial nominees with COVID-19 talks stalled Biden courts veterans amid fallout from Trump military controversies John Fogerty: 'Confounding' that Trump campaign played 'Fortunate Son' at rally MORE (D-Ill.) on Thursday took advantage of a new Senate rule to bring her infant daughter with her to cast a vote on the floor.

Senate leaders held the confirmation vote for Jim Bridenstine James (Jim) Frederick BridenstineNASA publishes Artemis plan to land first woman, next man on moon NASA is in the market for moon rocks Overnight Defense: Trump hosts Israel, UAE, Bahrain for historic signing l Air Force reveals it secretly built and flew new fighter jet l Coronavirus creates delay in Pentagon research for alternative to 'forever chemicals' MORE to be NASA administrator for nearly an hour to allow Duckworth and her daughter, Maile, to come in, for Duckworth’s first vote since giving birth earlier this month.

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Duckworth voted against Bridenstine. He was nonetheless confirmed, 50 to 49, with all Republicans in favor and all Democrats opposed.

Her trip to the floor was historic, and thought to be the first time an infant has been on the Senate floor.

Up until Wednesday, the Senate didn’t allow any children onto the floor. Congress’s upper chamber is notorious for strict rules from decorum to attire.

Senators voted unanimously on Wednesday to allow children under one year of age onto the floor. Duckworth pushed the resolution along with other Senate women, due to Duckworth’s concerns about being away from her daughter and not nursing her.

Duckworth, an Iraq War veteran who lost both of her legs when her helicopter was hit by a grenade, was in her wheelchair for the vote, carrying her daughter in a sling.

Thursday that she had prepared an outfit for Maile, complete with a blazer. McCaskill joked that Maile is “wearing a blazer,” abiding by the Senate’s strict dress rules. Duckworth joked on Twitter earlierthat she had prepared an outfit for Maile, complete with a blazer.

I may have to vote today, so Maile’s outfit is prepped. I made sure she has a jacket so she doesn’t violate the Senate floor dress code (which requires blazers). I’m not sure what the policy is on duckling onesies, but I think we’re ready pic.twitter.com/SsNHEuSVnY — Tammy Duckworth (@SenDuckworth) April 19, 2018

“I’m not sure what the policy is on duckling onesies, but I think we’re ready,” Duckworth tweeted. The girl also had a pink hat — technically prohibited by Senate rules for dress on the floor — and a white blanket.

Senators eventually noticed dozens of reporters in the gallery above gawking at Duckworth and Maile. “The press is finally interested in something worthwhile,” yelled Schumer.

Maile, Duckworth’s second daughter, was born April 9. Her entrance on the Senate floor also made a splash on Twitter:

Here’s Sen. Duckworth with the Senate’s newest baby! pic.twitter.com/AyyIvpvxQM — Lissandra Villa (@LissandraVilla) April 19, 2018

.@SenDuckworth, holding baby Maile, departs the Senate floor after casting her vote. How does it feel? “It’s amazing, and it’s about time.” pic.twitter.com/ZDfmT9k8Lf — Betsy Klein (@betsy_klein) April 19, 2018

Ok here's a better photo of Duckworth and baby. pic.twitter.com/z6yz19IJEn — Casey J. Wooten (@Casey_J_Wooten) April 19, 2018

Duckworth is the first sitting senator to give birth.

-Updated 3:15 p.m.