Former American Idol contestant Tamyra Gray’s daughter Sienna Marie Watters is a big girl now! Sienna celebrated her 1st birthday on July 17th.

PHOTOS:Check out archived pictures of little Sienna

Proud mom Tamyra took to Twitter this past weekend to wish her baby girl a happy birthday: “Wishing my sweet little princess a Happy 1st Birthday! I’m the luckiest mommy in the world! You have made me the best me I can be! I strive daily to be worthy of your love!! I love you [a] whole big bunches like the sky.”

Sienna’s dad is ex Color Me Badd member Sam Watters.